polar light

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北极光南极光PolarAurora

極光最常出沒的地方
→ 南北磁緯度67°附近 → 北半球：阿拉斯加、北加拿大、西伯利亞等 → 南半球：紐西蘭南島 → 最佳觀賞地點： (北極)阿拉斯加和北加拿大 → 北極光首都：阿拉斯加的費爾班(Fairbanks)一年
中有超過200天出現極光
北極光
(1) 阿拉斯加的費爾班
(2) 阿拉斯加的北極門國家公園
上空，激發高層空氣粒子 → 極光大多出現於兩極而非赤道
極光的顏色
(1) 被激發的氧原子 : 淺綠色 (2) 被激發的(能量較高)氮分子 : 粉紅色/紫紅色 (3) 被電離的氮極光與太陽活動的關係
→ 產生極光的高能電子來自太陽 → 太陽是個熾熱的火球，表面溫度大約是六千度。在
↑野生動物保護區
↑安迪科特山脈
↑安迪科特山脈
南極光
（完）
→神秘的極光
Aurora Borealis ： A Quick Explanation
/watch?v=pDst9Nbijg&feature=related
其他行星上的極光
→太陽系內的其他一些具有磁場的行星也會出現極光。
↑木星上的極光
↑土星上的極光
→ 爆炸把很多高能帶電粒子從太陽表面發射到外太空去，有些則隨著太陽風來到地球
↑太陽表面的爆炸
↑ 太陽黑子
→ 帶電粒子的運動極容易受磁場所影響 → 受地球磁場牽引，帶電粒子於南北兩極與地球大
氣層的空氣粒子碰撞。大氣層的空氣粒子受碰撞後會發光，形成極光 → 太陽活動較強的年份，極光出現的次數就會大大增加﹐而且特別絢麗多彩
極光 Polar Light
北極光 Aurora Borealis 南極光 Aurora Australis

polarization of light偏振光英文课件

10
Example Using Polarizers and Analyzers
What value of θ should be used so the average intensity of the polarized light reaching the photocell is one-tenth the average intensity of the unpolarized light?
The average Intensity S leaving the analyser is given by
S S0 cS os2
Where S0 is the average intensity of the light entering the analyser.
9
Crossed Analyser & Polariser 1
vibrations always occur along one direction. • The E field oscillates in one direction, the H field
in the orthogonal direction. • Longitudinal waves, like sound waves, cannot be
13
When Polaroid sunglasses are crossed, the intensity of the transmitted light is reduced to zero.
IMAX movie projector
Conceptual Example 8 How Can a Crossed Polarizer and Analyzer Transmit Light?

LED照明英语

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拉曼原理及特点和应用-RENISHAW

非弹性碰撞；方向改变且有能量交换；
激发虚态
h(0 - )
E1 + h0
E0 + h0 h0
h0 h0
h0 +
E1
V=1
E0 Rayleigh散射 V=0 Raman散射 h
E0基态， E1振动激发态； E0 + h0 ， E1 + h0 激发虚态；获得能量后，跃迁到激发虚态.
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• 1992年世界上首先发明新型显微共焦拉曼系统
最初的测头及专利证书
David McMurtry爵士董事长兼首席执行官
John Deer 副董事长
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遍及全球的子公司和办事处
子公司美国 (1981) 爱尔兰 (1981) 日本 (1982) 德国 (1986) 法国 (1988) 意大利 (1989) 西班牙 (1991) 瑞士 (1991) 香港 (1993) 巴西 (1996) 韩国 (1999) 印度 (2000) 比利时 (2000) 澳大利亚 (2001) 荷兰 (2001) 斯洛维尼亚 (2001) 捷克 (2002) 波兰 (2002) 俄罗斯 (2002) 奥地利 (2002) 瑞典 (2003) 加拿大 (2003) 以色列 (2003)
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连续扫描专利技术－全光谱范围一次扫描，无接谱
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inVia 系统特色-新型共焦专利技术
新型共焦技术
-高通光效率，操作简便，性能稳定
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传统共焦技术－机械针孔
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最新的显微共焦系统专利技术

polarlight极光介绍

Q&A
• 1.Where does a polar light appear?
South Pole/North Pole
It is said that....
• It is the incarnation of the dawn and the glow.In the Greek,it is the daughter of the Greek god Titan, the goddess of the sun god and the moon's sister, she is mother of the north wind and many other multistar. Polar light also was said to be the wife of Orion.
• Pittsburgh in America • Churchill City in Canda • Mohe in China
It can also be seen on the planet.
Q&A
• 3.Which countries are the best places to see the polar light?
Pittsburgh in America Churchill City in Canda Mohe in China
Time For Appreciation
Thank you!
f12061222 Yoki f12061224 Lucy
Introduction
• Polar light is often seen in latitude over the area near the geomagnetic pole color luminescence phenomena in ththe

夜光灯塔 Night-Lite Pro II LD-Series说明书

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北极光的知识(英文版)

The Aurora Borealis: A Glimpse intothe Northern LightsUnderstanding the Science Behind the Northern LightsThe Different Types of Northern LightsFactors Affecting the Visibility of the Northern LightsSeveral factors influence the visibility of the Northern Lights. The most crucial factor is solar activity, measured the Sun's 11year solar cycle. The lights are more frequent and intense during periods of high solar activity. Additionally, the time of year plays a significant role, as the Northern Lights are more visible during the equinoxes, particularly in March and September. Dark, clear skies are also essential for observing the Northern Lights, so remote locations away from city lights are ideal.How to Witness the Northern LightsTo witness the Northern Lights, planning and patience are key. First, you'll need to be in a location with a high latitude, such as Alaska, Canada, Scandinavia, or Iceland. Check for solar activity forecasts and choose a time when the sky is clear and dark. Remember to dress warmly, as the best viewing conditions often occur in cold temperatures. Bring acamera to capture the stunning lights, and be prepared to wait, as the Northern Lights can be unpredictable.In conclusion, the Northern Lights are a breathtaking natural wonder that continues to captivate people around the world. By understanding the science behind this phenomenon and knowing the best conditions for viewing, you can increase your chances of experiencing this onceinalifetime spectacle.The Northern Lights: A Celestial Dance of Light and Color The Enchanting Patterns of the AuroraThe Mythology and History of the Northern LightsFor centuries, the Northern Lights have been a subject of fascination, inspiring myths and legends among various cultures. The Sami people of Scandinavia believed the lights were caused the firefoxes running so quickly across the snow that their tails sparked and ignited the sky. In Norse mythology, the lights were considered to be the reflections of the Valkyries' armor as they rode across the sky, leading fallen warriors to Valhalla. Early scientists, like the Greek explorer Pytheas, documented the Northern Lights as far back as 325 BCE, but it wasn't until the 17th century that scientists like Edmond Halley began to understand their true nature.The Impact of the Northern Lights on TechnologyChasing the Lights: A Guide for Aurora HuntersFor those who seek to witness the Northern Lights, the journey is often referred to as "aurora hunting." Here are some tips for aspiring hunters:Research and Prepare: Learn about the best times and locations for aurora viewing. Use aurora forecast websites to track solar activity and geomagnetic storms.Stay Informed: Sign up for aurora alerts and keep an eye on the weather forecast for clear skies.Be Patient: The Northern Lights can be elusive. Be prepared to wait for hours, and sometimes multiple nights,for the perfect conditions.Safety First: If you're venturing into remote areas, make sure you have the proper gear, a reliable form of transportation, and that someone knows your whereabouts.The Northern Lights: A Universal ConnectionThe Northern Lights are a humbling reminder of the interconnectedness of our planet with the vast universe. As we stand beneath the shimmering auroral glow, we are not just spectators but participants in a cosmic event that spans time and space. The Northern Lights, with their ethereal beauty, continue to inspire awe and curiosity, reminding us of the wonders that lie beyond our everyday world.The Northern Lights: A Celestial Symphony of Earth and SpaceThe Sensitive Relationship Between the Lights and Earth's EnvironmentThe Northern Lights are not just a passive display; they are a dynamic response to the Earth's environment. The interaction between the solar wind and the Earth's magnetosphere is influenced various environmental factors. For instance, the presence of coronal holes on the Sun can increase the speed of the solar wind, leading to more intense auroral activity. Additionally, the Earth's magnetic field itself is not static; it fluctuates and can even experience reversals over geological timescales, which in turn affects the behavior of the Northern Lights.The Sounds of the Northern LightsThe Northern Lights and Human HealthConserving the Night Sky for Future GenerationsThe Northern Lights rely on dark skies to be visible, and as urbanization spreads, artificial light pollution threatens the visibility of this natural wonder. Conservation efforts are underway to protect dark sky areas, ensuring that future generations can experience the Northern Lights in their full glory. Initiatives such as the International DarkSky Association work to educate the public about the importance of dark skies and to advocate for the reduction of light pollution.Tips for Photographing the Northern LightsFor those who wish to capture the Northern Lights through photography, here are some practical tips:Equipment: Use a camera with manual settings, a wideangle lens, and a sturdy tripod.Settings: Set your camera to a high ISO, a wide aperture (low fnumber), and a long shutter speed, depending on the brightness of the lights.Composition: Frame your shot with interesting foreground elements to add depth to your image.The Northern Lights: A Universal LanguageThe Northern Lights speak a universal language that transcends cultural and linguistic boundaries. They are a shared wonder of the natural world, capable of uniting people under the same aweinspiring sky. Whether you are a scientist studying their intricate patterns or a traveler seeking a onceinalifetime experience, the Northern Lights offer a profound connection to the cosmos and a reminder of the beauty that exists beyond our daily lives.。

Everlight 电子光源芯片 LED 与直角镜头说明书

Technical Data SheetChip LED with Right Angle Lens12-21SYGC/S530-XX/TR8Features˙Package in 8mm tape on 7〞diameter reel.˙Compatible with automatic placement equipment. ˙Compatible with infrared and vapor phase reflowsolder process. ˙Mono-color type.Descriptions˙The 12-21 SMD Taping is much smaller than lead frame type components, thus enable smaller board size, higher packing density, reduced storage space and finally smaller equipment to be obtained.˙Besides, lightweight makes them ideal for miniature applications. etc.Applications˙Automotive: backlighting in dashboard and switch. ˙Telecommunication: indicator and backlighting in telephone and fax.˙Flat backlight for LCD, switch and symbol. ˙General use.Device Selection GuideChipMaterial Emitted Color Lens ColorAlGaInPSuper Yellow GreenWater Clear12-21SYGC/S530-XX/TR8Notes: Tolerances Unless Dimension ±0.1mm , Angle±0.5°,Unit = mmAbsolute Maximum Ratings (Ta=25℃)Parameter SymbolRatingUnitReverse Voltage V R 5 VForward Current I F 25 mAOperating Temperature Topr -40 ~ +85 ℃Storage Temperature Tstg -40~ +90 ℃Soldering Temperature Tsol 260 (for 5 second)℃Electrostatic Discharge ESD 2000 VPower Dissipation Pd 60 mWPeak Forward Current(Duty 1/10 @1KHz)I F 160 mA12-21SYGC/S530-XX/TR8Electro-Optical Characteristics (Ta=25℃)ParameterSymbol*Chip RankMin. Typ. Max. UnitConditionE1 13 19 -----E2 19 26 -----E3 26 35 ----- Luminous IntensityIv E4 35 41 -----mcd I F =20 mAViewing Angle 2θ1/2 ----- ----- 120 ----- deg I F=20mA Peak Wavelengthλp ----- ----- 575 -----nm I F=20mA Dominant Wavelengthλd----- ----- 573 ----- nm I F =20mA Spectrum RadiationBandwidth △λ ----- ----- 20 -----nm I F =20mA Forward VoltageV F----- ----- 2.0 2.4 VI F =20mA Reverse CurrentI R ----- ----- ----- 10μA V R =5V*12-21SYGC/S530-XX/TR8Chip RankReel & Carrier Tape Dimensions Loaded quantity per reel 2000 PCS/reel12-21SYGC/S530-XX/TR8 Typical Electro-Optical Characteristics Curves12-21SYGC/S530-XX/TR8Reliability Test Items And ConditionsThe reliability of products shall be satisfied with items listed below. Confidence level : 90 % LTPD : 10 %No. Items Test Condition Test Hours/Cycles SampleSizeAc/Rc1 Reflow Temp. : 240℃±5℃Min. 5 sec. 6 min. 22 Pcs. 0/12 Temperature Cycle H : +85℃ 30min.∫ 5 min.L : -55℃ 30min. 50 Cycles 22 Pcs. 0/1 3 Thermal Shock H : +100℃ 5min.∫ 10 sec.L : -10℃ 5min.50 Cycles 22 Pcs. 0/1 4High TemperatureStorage Temp. : 100℃ 1000 Hrs. 22 Pcs. 0/1 5Low TemperatureStorage Temp. : -55℃ 1000 Hrs. 22 Pcs. 0/1 6 DC Operating Life I F = 20 mA 1000 Hrs. 22 Pcs. 0/1 7 High Temperature/ High Humidity85℃/R.H85%1000 Hrs.22 Pcs.0/112-21SYGC/S530-XX/TR8Precautions For Use1. Over-current-proofCustomer must apply resistors for protection , otherwise slight voltage shiftwill cause big current change ( Burn out will happen ).2. Storage time2.1 The operation of Temperature and RH are : 5℃~35℃, RH60%.2.2 Once the package is opened, the products should be used within a week.Otherwise, they should be kept in a damp proof box with descanting agent.Considering the tape life , we suggest our customers to use our productswithin a year(from production date).2.3 If opened more than one week in an atmosphere 5℃~35℃, RH 60%,they should be treated at 60℃±5℃for 15hrs.2.4 When you discover that the desiccant in the package has a pink color(Normal = blue) , you should treat them in the same conditions as 2.3.Soldering heat Reflow Temp / TimeSoldering IronBasic spec is ≦5 sec when 260℃.If temperature is higher, time should be shorter (+10℃→-1sec). Power dissipation of Iron should be smaller than 15 W , and temperature should becontrollable. Surface temperature of the device should be under 230 ℃.12-21SYGC/S530-XX/TR8 Rework1. Customer must finish rework within 5 sec under 245℃.2. The head of iron can not touch copper foil.。

Polar AXN300 户外电脑运动表说明书

用户手册 - Polar户外电脑运动表AXN300™本说明书为英文版本的撮要，省略之部分请参阅英文版。

本说明书以英文版作最终解释。

按钮Light/Keylock －夜光照－向上明/按钮锁定Start －开始Stop －“停止”－向下尊敬的客户：恭喜你购买了Polar户外电脑运动表！我们为能够针对所有户外运动爱好者提供这样一款度身设计的产品而感到十分自豪。

户外电脑运动表可以让你在户外运动中安全、自信地获得最佳的体验。

请仔细阅读本手册，以便自己精通户外电脑运动表的使用；同时也请你在户外运动中使用户外电脑运动表之前，先进行适当的练习。

本手册包含有如何使用与维修你的户外电脑运动表的相关资料。

位于手册封面背面的功能指示图为Polar户外电脑运动表多种功能的快速指南，请你把它剪下并且随身携带。

更多关于产品支持以及个人锻炼计划与锻炼日志的信息，请登录网站查阅我们的网页服务内容。

Polar祝愿你在每次户外历险中都可以获得最佳的体验。

希望你能够通过使用Polar产品达到自己的运动巅峰！AXN300快捷指南按钮符号：Start 开始：按下Start “开始”按钮 Up ▲ 向上：按下Up “▲向上”按钮Stop 停止：按住“停止”按钮，你可以从任何模式下返回至起始点（时间显示主模式）。

Up ▲ 向上 Up ▲ 向上 Up ▲ 向上Start Start Start Start 开始开始开始开始菜单MENU 手表设置 WATCH SET ▲档案模式 FILES ▲ 设置 SETTINGS ▲ 秒表STOPWATCH ▲倒数计时器 COUNTDOWN ▲连接模式 CONNECT 停止 STOP启动 ACTIVE高度计/气压计 ALTI/BARO ▲海拔高度：刻度比例 Altitude: SCALE ▲ 校准CALIBRATION 停止 STOP启动 ACTIVE 气压计/高度计 BARO / ALTI▲ 校准CALIBRATION 停止 STOP测试：健康测试 Test: FITNESS 停止 STOP活动 ACTION 开启记录功能 Rec ON 停止 STOPPolar户外电脑运动表系列AXN300通过使用心率表，你能够监测自己的户外运动与周边环境的情况。

阿尔法冷（Alphacool）Eisblock Aurora Acrylic GPX图形卡水冷器说明

The Alphacool Eisblock Aurora Acrylic GPX graphics card water coolerwith backplate combines style with performance. Extreme coolingperformance and an extensive digital RGB lighting characterize it.Experience and technical know-how from more than a decade havegone into the development, without making any technicalcompromises. The Eisblock Aurora Acryl GPX is a significant evolutionof the previous Alphacool graphics card water cooler, which has beenimproved in every area.•Fullcover water block •Chrome-plated copper cooler •Adressable digital RGB LEDs- AMD Radeon™ RX 6750 XT V. 1.004 // 08.2023Alphacool Eisblock Aurora Acryl GPX-A RX 6750 XT Reference with BackplateAlphacool article number: 186702x 15x42x1mm thermal pad (7 W/mK) 1x 15x56x1mm thermal pad (7 W/mK) 1x 8x74x1mm thermal pad (7 W/mK) 1x 15x51x2mm thermal pad (7 W/mK) 1x 15x76x2mm thermal pad (7 W/mK) 1x 8x74x3mm thermal pad (3 W/mK) 2x 15x40x3mm thermal pad (3 W/mK) 1x 8x56x3mm thermal pad (3 W/mK) 1x 30x30x3mm thermal pad (3 W/mK) 6x M2x5 screw 6x M2 washer1x Thermal grease (Alphacool Subzero 16 W/mK) 7x M2x11 screw1x digital-RGB adapter1x plug tool2x screw plug1x M3x5 screw1x M3 nut1x backplateThe Alphacool Eisblock Aurora Acrylic GPX graphics card water cooler with backplate combines style with performance. Extreme cooling performance and an extensive digital RGB lighting characterize it. Experience and technical know-how from more than a decade have gone into the development, without making any technical compromises. The Eisblock Aurora Acryl GPX is a significant evolution of the previous Alphacool graphics card water cooler, which has been improved in every area.More performance!During the development of the Eisblock Aurora Acryl GPX graphics card water cooler, emphasis was naturally placed on increasing performance. First, the cooler was brought closer to the individual components by reducing the thickness of the heat conducting pads. Next, the nickel-plated copper block was also made thinner. Step 3 involves the constant optimisation of the water flow within the cooler. The result: All important components such as voltage converters and RAM are cooled much better and more effectively by the water and the cooling performance increases significantly.Chrome-plated copperThe cooler is made entirely of chrome-plated copper. A chrome plating is much harder than a nickel plating and therefore less sensitive to acids, scratches and damage. It completely eliminates the risk of chipping nickel plating. Additionally, chrome plating looks much more homogeneous and provides a shine that cannot be achieved by nickel plating. Chrome-plated coolers have previously only been used in the industrial sector in areas where extreme influences act on the coolers.Brilliant design!The addressable digital aRGB LEDs are embedded directly in the cooling block and run along the sides of the entire cooler. The effect is an illumination that engulfs the entire cooling block. No corner or edge is left unlit by the aRGB LEDs. The new design is more angular, with all edges bevelled. The result is better light diffusion in the water cooler due to the reflections on these bevels. They also create various contours that give the Eisblock Aurora Acryl GPX cooler its very own visual touch.Thermal paste & thermal padsThe included thermal compound is Alphacool's Subzero. With a thermal conductivity of 16 W/mk, it is one of the highest performing thermal pastes on the market. The electrically non-conductive thermal compund is particularly well suited for high contact pressures, but can still be processed perfectly due to its viscosity of 850000 TF. Alphacool Soft Pads with 1mm and 2mm thickness are used on the voltage converter and the graphics memory. The thermal conductivity of the pads is 7W/mK. The pads for the back of the PCB are 3mm thick and have a thermal conductivity of 3W/mk.Other special featuresThe Eisblock Aurora Acryl GPX GPU cooler has the patented screw plugs, which sit flush with the surface of the terminal. The Alphacool logo sits in the corner on the top and is also fully illuminated. On the front of the terminal, corresponding designations of the compatible graphics card manufacturers can be seen. Of course, these are also fully illuminated by the adressable digital LEDs. IN and OUT are marked by small discreet triangles. They are easily recognisable and fit perfectly into the overall visual line of the graphics card water cooler.Drawing。

ARRI SkyPanel LED软光源产品介绍说明书

SkyPanel is a compact, ultra-bright and high-quality LED soft light that sets a new standard forthe industry. With a design focused on form, color, beam field and output, SkyPanel representsthe culmination of more than a decade of research and development of LED technology at ARRI.SkyPanel is available in several sizes: the S30, S60, S120, and S360. The S60 is a mid-rangemodel, featuring a light aperture of 645 x 300 mm and accommodating the vast majority ofapplications. The S120 is twice as long as the S60, but weighs nearly the same. Its larger lightaperture makes a great soft light even better. The S30 is a smaller, more portable version; halfthe length of the S60, it is perfect for on-the-go mobile applications. The S360 is the largest andbrightest SkyPanel with four times the output of the S60 and almost six times the aperture size.The S360 is perfect for lighting large areas with tuneable, soft light. S30 and S60 models areavailable in fully color tuneable and remote phosphor versions.Incorporating features of ARRI’s successful L-Series LED Fresnels, SkyPanel is one of the mostversatile soft lights on the market, as well as one of the brightest. Like the L-Series, SkyPanel ‘C’ (Color) versions are fully tuneable; correlated color temperature is adjustable between 2,800 K and 10,000 K, with excellent color rendition over the entire range. Full plus and minus green correction can be achieved with the simple turn of a knob, and in addition to CCT control, vivid color selection and saturation adjustment is also possible.Unlike other tuneable fixtures, SkyPanel makes no sacrifice when it comes to light output. SkyPanel puts out a tremendous amount of light, in a soft and uniform beam field. Brighter than a 2 kW tungsten soft light or a 6 kW tungsten space light, the SkyPanel S120 has more than enough light for most applications. At the same time, the lamphead is able to perform beautifully at lower light levels. This range of illumination and color gives users an unprecedented amount of control.Made in Germany to the high standards for which all ARRI products are known, SkyPanel is built to last – constructed from resilient materials and assembled by hand with great care. Other features include an on-board battery input for mobile applications, LAN port for network connectivity, USB-A port for firmware updates via thumb drive, and many more.Photometric DataS120-C with Standard Diffusion127 fc116 fc46 fc42 fc23 fc21 fc14 fc13 fcS120-C with Lite Diffusion 1445 lx1311 lx520 lx472 lx265 lx241lx161 lx146 lx 134 fc122 fc48 fc44 fc25 fc22 fc15 fc14 fcS120-C with Heavy Diffusion 1120 lx1022 lx403 lx368 lx206 lx188 lx124 lx114 lx 104 fc95 fc37 fc34 fc19 fc17 fc12 fc11 fcS120-C with Intensifier 2151 lx1944 lx774 lx700 lx395 lx357 lx239 lx216 lx 200 fc181 fc72 fc65 fc37 fc33 fc22 fc20 fcOrder No.DescriptionL0.0012956S120-C, Manual, Blue/Silver, 3 m DC Cable, S60/S120 PSU with Rail Mount Adapter, Standard Diffusion Panel, powerCON Edison cable L0.0012954S120-C, Manual, Blue/Silver, 3 m DC Cable, S60/S120 PSU with Rail Mount Adapter, Standard Diffusion Panel, powerCON Schuko cable L0.0013424S120-C, Manual, Black, 3 m DC Cable, S60/S120 PSU with Rail Mount Adapter, Standard Diffusion Panel, powerCON Edison cableL0.0012950S120-C, Center Mount, Blue/Silver, 3 m DC Cable, S60/S120 PSU, Standard Diffusion Panel, powerCON Edison cableL0.0012948S120-C, Center Mount, Blue/Silver, 3 m DC Cable, S60/S120 PSU, Standard Diffusion Panel, powerCON Schuko cableL0.0012953S120-C, Pole Op, Blue/Silver, 1 m DC Cable, S60/S120 PSU with Rail Mount Adapter, Standard Diffusion Panel powerCON, Bare EndsL0.0012952S120-C, Pole Op, Black, 1 m DC Cable, S60/S120 PSU with Rail Mount Adapter, Standard Diffusion Panel powerCON, Bare EndsTechnical Specifications。

Polar F11 健身心率表说明书

Front 1用户手册- Polar F11 健身心率表本说明书为英文版本的撮要，省略之部分请参阅英文版。

本说明书以英文版作最终解释。

按钮按下“确定”按钮，进入菜单模式。

按下“▲向上”或“▼向下”按钮，移动至下一菜单模式。

按住“后退”按钮，心率表即可返回至时间显示模式。

▼– “▼向下”按钮Light “夜光照明”按钮Back – “后退”按钮▲– “▲向上”按钮 OK – “确定”按钮Front 2Polar F11心率表快速指南将已获取的锻炼数值与每周的锻炼目标进行对比，从而了解自己是否按计划实现了既定的健身目标。

(流程表请看下一页)尊敬的客户:恭喜你购买了新款Polar F11健身心率表！Polar F11心率表能够帮助你实现自己的健身目标。

Polar F11心率表具有Polar自我健身锻炼程序(Keeps U Fit - Own Workout Program)功能；它能帮助你制定个性化的训练计划，在锻炼期间进行日志记录，并能跟进你的健身进程。

该个性化程序是以你通过Polar健康测试所确定的当前有氧健康水平为基础的。

输入程序的设置选项与锻炼期间的运动量，Polar F11心率表便会为你生成相应的锻炼计划。

如果你在锻炼期间使用了Polar F11心率表，锻炼结束后，你即可查阅储存在电子日志中的资料信息。

在日志模式下，你还能够用图表的形式将自己的健身进程与锻炼目标进行对比。

此外，请于每月进行一至两次Polar健康测试，从而了解自身健康状况的长期变化趋势。

此用户手册包含有如何使用与保养本产品的必需信息。

请你继续阅读本手册，以了解如何使用F11心率表，以及如何获得最佳的使用效果！请浏览我们的网站：Polar健身教练网页 ()与www.polar.fi，以查找最好的产品与训练秘诀, 或者享受我们为你提供的其它增值服务。

监测诸如你的心率数值查阅上一锻炼阶段所记更改闹铃、时进行Polar 健康测试，创建锻炼程序，编按钮与锻炼期间的能量消耗录的详细资料，以及长间显示，以及了解自身健康状况的辑与更改程序中的这样的资料信息期的锻炼资料其它设置长期变化趋势设置选项”按钮 ”按钮 ”按钮 ”按钮按下“确定”按钮按下”开始 (START) ▼设置模式(SETTINGS)“后退”健康测试(TEST) ▼ 曲线图 (TREND) ▼ 数据传输 (SEND) “后退”锻炼档案(EXERCISES)▼ 资料总值档案 (TOTALS) ▼ 日志档案 (DIARY) ▼ 发送档案 (SEND)“后退”创建锻炼程序(CREATE) ▼ 编辑程序 (EDIT) ▼ 程序设置 (SETTINGS) ▼ 数据传输 (SEND) “后退”手表设置 (WATCH) ▼ 心率设置组合模式(HR SET) ▼ 用户设置模式 (USER) ▼普通设置模式 (GENERAL) “后退”File ExercisSetting Test ProgramPage 5目录1. Polar F11心率表的使用说明 (7)1.1心率表的部件 (7)1.2心率表的按钮及显示符号 (8)1.3 基本设置 (10)1.4 如何测量心率 (12)2.自我健身锻炼程序 (14)2.1创建自我健身锻炼程序 (15)2.2查阅与编辑锻炼程序 (17)2.3程序设置 (23)3. 锻炼 (25)3.1如何开始记录锻炼资料 (25)3.2锻炼期间的心率表功能 (26)3.3锻炼设置 (32)3.4 OWNZONE个人运动区功能 (34)4.监测你的锻炼进程 (37)4.1电子日志功能 (37)4.2每周与每月跟进 (41)5. 如何查阅已储存的资料信息－档案 (43)5.1锻炼档案 (44)5.2资料总值档案 (46)5.3日志档案 (47)6. Polar健康测试－个人有氧健康指数 (49)6.1进行有氧健康测试 (50)6.2健康测试曲线图 (52)7. 更新你的锻炼程序 (54)8. 设置 (55)8.1手表设置 (55)8.2心率设置 (63)8.3日志设置 (67)8.4用户设置 (68)8.5普通设置 (72)9. 数据传输 (74)10. 保养及维修 (75)11. 注意事项 (77)11.1使用Polar心率表时可能遇见的干扰 (77)11.2 如何在使用心率表进行锻炼时，将潜在风险降至最低 (78)12. 常见问题解答 (79)13. 技术说明 (81)14. Polar有限质量国际保证卡 (82)15. 责任声明 (83)16. 索引 (84)1. Polar F11心率表的使用说明1.1 F11心率表的部件Polar F11心率表套装由下列几部分组成：心率表心率表具有Polar自我健身锻炼程序(Keeps U Fit - Own Workout Program)功能。

Maya材质与灯光

Maya材质与灯光Maya材质与灯光讲义三点照明⼀．Maya灯光与阴影的创建⽤户可以从Maya界⾯中的不同部分来创建灯光。

1、从Shelf/Rendering⾥创建。

2、从Create/Lights⾥创建。

3、从Hyper Shade/Lights⾥创建。

⼆．灯光的类型1、在Create-Lights命令下我们可以看到，6种灯光的类型。

2、它们是Ambient Light环境光；Directional Light平⾏（定向）光；Point Light泛光灯（点光源）；Spot Light聚光灯；Area Light区域光；V olume Light体积光。

3、⼿柄⼯具：先选择灯光，再按键盘“T”键。

如下图4、为了⽅便我们摆放灯光，还经常⽤到Look Through seleted[通过当前选择项观察]命令来使得我们以灯光的视⾓来观察物体。

5、Ligt-Centric[灯光中⼼]的⽤法：打开Light_Centric.ma场景⽂件，激活persp透视图，找⼀个合适的⾓度，渲染看效果。

在现场中排除灯光：【灯光中⼼】或【物体中⼼】三、基本灯光的属性1、Ambient Light（环境光）环境光能够从各个⽅向均匀的照射场景中的所有物体。

环境光具有两种照明⽅式：⼀种是从⼀点向外全⾓度产⽣照明，可以模拟室内物体或⼤⽓产⽣的漫反射效果；另⼀种是类似于平⾏光的效果，可以模拟室外太阳光的光照效果。

优点：环境光可以让物体在不同⾓度均匀受光，模拟物体受环境间接照明的效果，环境光可以与平⾏光结合使⽤，来模拟室内太阳光的效果。

2、3、Directional Light（平⾏光）平⾏光是⽤来模拟⼀个⾮常明亮，⾮常遥远的光源。

所有的光线都是平⾏的，照明与⽅向有关，与位置⽆关，经常⽤于全局照明。

虽然太阳是⼀个点光源。

可是因为它离我们的距离是如此的遥远，以⾄于太阳光到达地球后实际上是没有⾓度的，所以我们⽤平⾏光源来模拟太阳光。

深度贴图阴影，是通过计算灯光与物体之间的位置，产⽣阴影贴图，模拟出阴影效果。

介绍一种科学现象的英语作文高中

介绍一种科学现象的英语作文高中全文共10篇示例，供读者参考篇1Hey guys! Today, I want to tell you all about a super cool science phenomenon called the Northern Lights. Have you heard of it before? It's also known as aurora borealis, and it's truly a magical sight to see in the sky.So, what exactly are the Northern Lights? Well, they occur when charged particles from the sun collide with gases in the Earth's atmosphere. These collisions create beautiful colors in the sky, like green, pink, purple, and red. It's like a colorful dance party happening right above us!The best place to see the Northern Lights is in high-latitude regions like Alaska, Canada, and Scandinavia. But sometimes, if you're lucky, you can even catch a glimpse of them in places like Iceland or Scotland.When you see the Northern Lights, it feels like you're witnessing something out of this world. The colors swirl and twirl in the sky, creating patterns that look like shimmering curtains ordancing waves. It's truly a breathtaking experience that will leave you in awe of the wonders of our universe.I hope you all get the chance to see the Northern Lights one day. It's a natural phenomenon that will leave you with memories to last a lifetime. Who knows, maybe one day we'll even get to study them up close and unlock the secrets behind their beauty. Until then, keep looking up at the sky and dreaming big!篇2Ahem, ahem, hi everyone! Today I want to talk about a super cool science phenomenon called the Northern Lights! Have you heard about it before? It's like a magical light show in the sky that happens in the far north near the Arctic Circle.So, basically, the Northern Lights are caused by the sun. Yep, the sun! When the sun has a big burp of energy called a solar flare, it shoots out a bunch of charged particles into space. These particles travel through space and eventually reach our Earth.Now, here's where the magic happens. When these charged particles reach our Earth's atmosphere, they interact with gases like oxygen and nitrogen. This interaction creates beautiful colors like green, purple, red, and blue that dance across the sky. It's like a colorful party in the night!The best time to see the Northern Lights is during the winter when the nights are long and dark. People travel from all over the world to see this amazing sight. Some even say it's like seeing nature's own fireworks display.I hope you enjoyed learning about the Northern Lights as much as I did! It's just one of the many amazing things that happen in our world thanks to science. Keep being curious and exploring the wonders of our universe! Bye-bye now!篇3Hello everyone! Today I want to talk about a really cool science phenomenon called the Northern Lights. Have you ever heard of it? Well, let me tell you all about it!The Northern Lights, also known as Aurora Borealis, are beautiful natural lights that can be seen in the northern hemisphere. They appear in the sky as colorful streaks of light, usually in shades of green, blue, pink, and purple. The lights dance and move across the sky, creating a stunning show that is truly mesmerizing.But how do the Northern Lights happen? Well, let me explain it in simple terms. The lights are caused by particles from the sun colliding with gases in the Earth's atmosphere. These collisionsrelease energy in the form of light, which is what creates the colorful display we see in the sky.The best time to see the Northern Lights is during the winter months, when the nights are long and dark. The best places to see them are in countries like Norway, Sweden, Finland, and Iceland. People travel from all over the world to witness this incredible natural phenomenon, and it's definitely a sight worth seeing!So, next time you're outside on a clear winter night, make sure to look up at the sky and see if you can spot the Northern Lights. It's a magical experience that you won't soon forget!I hope you enjoyed learning about this amazing science phenomenon. Thanks for listening!篇4Oh, hello everyone! Today I want to talk about a really cool science phenomenon called bioluminescence. It's like magic in nature!So, have you ever seen those little fireflies that light up at night? Well, that's bioluminescence! It's when living organismslike fireflies, jellyfish, and some types of bacteria can produce their own light. How amazing is that?The way it works is super interesting. These organisms have special chemicals inside their bodies that react with oxygen to create light. It's like a tiny light show all happening inside them!But bioluminescence isn't just for fireflies and jellyfish. There are even some types of mushrooms and deep-sea creatures that can glow in the dark! Imagine walking through a forest and seeing mushrooms lighting up the ground like little lanterns. It's like something out of a fairy tale!Scientists are still studying bioluminescence to understand how it works and how we can use it for different things. Some researchers are even trying to create bioluminescent plants that can light up our cities without using electricity. How amazing would that be?So, next time you see a firefly or a glow-in-the-dark jellyfish, remember that you're witnessing one of nature's coolest and most magical phenomena: bioluminescence! Isn't science just the coolest?篇5Title: The Amazing Science of LightningHi everyone! Today, I want to talk to you about something super cool and a little bit scary – lightning! Have you ever seen a lightning bolt streak across the sky during a thunderstorm? It’s like a big flash of light that lights up the whole sky for just a second. Lightning is actually a really powerful form of electricity that happens during thunderstorms.So, here’s how it works: when a thunderstorm is happening, the clouds are moving around and rubbing together. This makes the clouds get all charged up with electricity. The negative charges gather at the bottom of the cloud, while the positive charges build up at the top. Eventually, the negative charges on the bottom of the cloud reach down towards the ground, looking for a place to connect with the positive charges.When the negative charges from the cloud meet the positive charges from the ground, BOOM! Lightning strikes! The lightning bolt is like a big spark of electricity that travels super fast from the cloud to the ground. That’s why we see it as a quick flash of light.But did you know that lightning can also strike from cloud to cloud? It’s true! Sometimes, the lightning bolt will jump fromone cloud to another instead of going all the way down to the ground. Isn’t that amazing?So, the next time you see a thunderstorm and hear the rumble of thunder, remember that it’s all because of the incredible science of lightning. Stay safe and remember to stay indoors during storms! Thanks for listening!篇6Title: The Amazing Phenomenon of PhotosynthesisHey everyone! Today I want to talk to you about this super cool thing called photosynthesis. Have you ever heard of it? It's like magic that happens in plants to help them grow and make food for themselves.So, here's the deal - photosynthesis is a process where plants use sunlight, carbon dioxide, and water to make their own food. Isn't that wild? I mean, they literally make their own food out of thin air and sunshine!Here's how it works: first, the plant's leaves take in sunlight through a special pigment called chlorophyll. This pigment absorbs the sunlight and uses its energy to convert carbondioxide from the air and water from the ground into glucose, which is a type of sugar that plants use as food.But wait, there's more! During this process, plants also release oxygen into the air as a byproduct. Isn't that amazing? They basically clean the air for us while making their own food.And get this - without photosynthesis, we wouldn't be able to survive because plants are at the bottom of the food chain. They provide food for animals, which in turn provide food for us. So, in a way, we owe our lives to this incredible phenomenon.Next time you see a plant soaking up the sun, remember all the hard work it's doing to keep us alive. Photosynthesis truly is a magical and essential process in our world. Cool, right?篇7Title: A Cool Science Phenomenon - Northern LightsHey guys! Today I want to tell you about a super awesome science phenomenon called the Northern Lights. Have you ever heard of it before? It's like a magical light show in the sky!So, the Northern Lights, also known as Aurora Borealis, happen when particles from the sun bump into atoms and molecules in the Earth's atmosphere. These particles come fromthe sun in something called solar wind. When the particles collide with the atoms and molecules, they create beautiful colors in the sky.The colors can be green, pink, purple, or even red! Imagine seeing a rainbow in the sky at night - so cool, right? The Northern Lights are usually seen in countries near the North Pole, like Norway, Sweden, and Canada. You have to be in a dark place away from city lights to see them clearly.People have been watching the Northern Lights for centuries and have come up with all sorts of stories and myths about them. Some people think they are spirits dancing in the sky, while others believe they bring good luck.Next time you see pictures of the Northern Lights, remember that they are not just pretty colors - they are a super cool science phenomenon that happens way up in the sky. Maybe one day you can travel to see them in person! How awesome would that be?篇8Hi everyone, I'm going to tell you about a super cool scientific phenomenon called the Northern Lights. Have you everheard of them? They're like colorful lights in the sky that dance around and look super magical!So, the Northern Lights are also known as the Aurora Borealis. They mainly happen near the North Pole, which is why they're called the Northern Lights. But did you know there are also Southern Lights called the Aurora Australis near the South Pole? How cool is that?The Northern Lights are caused by particles from the sun that collide with gases in the Earth's atmosphere. These particles are mostly electrons and protons, and when they collide with the gases, they create beautiful colors in the sky. The most common colors are green and pink, but sometimes you can also see purple, blue, and red in the Northern Lights.One of the best places to see the Northern Lights is in Norway, Finland, Iceland, or Canada. People from all over the world travel to these places just to catch a glimpse of this amazing natural light show. It's definitely on my bucket list to see them one day!So next time you're outside on a clear night, look up at the sky and you might just spot the Northern Lights. It's like nature's own fireworks display and it's truly breathtaking. I can't wait to see them in person one day!篇9Hello everyone! Today, I'm going to talk about a super cool science phenomenon called the Northern Lights. Have you ever heard of it before? It's like a magical light show that happens in the sky!So, what exactly are the Northern Lights? Well, they are also known as Aurora Borealis and they occur when electrically charged particles from the sun collide with gases in the Earth's atmosphere. These collisions create beautiful and colorful lights that dance across the sky.The Northern Lights can be seen in countries like Norway, Sweden, Finland, Iceland, and even Canada and Alaska. People travel from all over the world to witness this amazing natural phenomenon. It's like watching a colorful fireworks display, but in the sky!The colors of the Northern Lights can vary from green to pink to purple to red. It all depends on which type of gas the particles are interacting with in the atmosphere. The lights can also move and change shape, making it even more mesmerizing to watch.So, next time you have a chance to see the Northern Lights, make sure to look up at the sky and enjoy the show. It's truly a unique and magical experience that will leave you in awe of the wonders of our universe. I hope you all get to witness this amazing science phenomenon someday! Thank you for listening!篇10Hello everyone! Today I want to talk to you about a really cool science phenomenon called the Northern Lights. Have you ever seen pictures or videos of these beautiful lights in the sky? They are so amazing!The Northern Lights, also known as Aurora Borealis, are natural light displays that can be seen in the sky near the North Pole. They are caused by particles from the sun colliding with gases in the Earth's atmosphere. This collision creates bright and colorful lights in the sky, usually in shades of green, pink, purple, and blue.One of the best places to see the Northern Lights is in countries like Norway, Sweden, Finland, and Iceland. People from all over the world travel to these countries just to catch a glimpse of this incredible natural wonder.Scientists have been studying the Northern Lights for many years, trying to understand how and why they occur. They have found that the lights are most active around the equinoxes in March and September, and tend to be more vibrant in areas with little light pollution.Next time you see a picture of the Northern Lights, remember that they are not just pretty lights in the sky – they are a fascinating scientific phenomenon that can teach us a lot about our planet and the universe. Let's keep exploring and learning about the amazing world around us!。

冰岛极光的英文诗

以下是冰岛极光的英文诗，以及相应的解析：The Icelandic Polar LightIn the distance, the northern skiesIlluminate with a mystic glowA prismatic hue, so pure and brightThe Icelandic Polar Light.It dances on the frigid airA silent symphony of lightAwe-inspiring, nature's playAs if a goddess of the night.The mountains, stark and barrenReflect the hues of this grand lightA wondrous sight, a gift from aboveA beauty that can't be denied.I stand in awe, breathless and stillAs the colors dance in my eyesA scene so pure, a vision so realI feel a part of the sky.The cold wind stings my faceBut the warmth within my heartIs a reminder of life's beautyAnd the love that it can't be marred.This is my witness, my legacyTo the beauty that I've seenA gift from nature, a dream come trueThe Icelandic Polar Light.解析：这首诗描述了冰岛极光的美丽和神秘。

CommScope LazrSPEED 低烟低有害分布式光纤电缆 Z-DS 24光纤单元说明书

Page of 16Fiber Indoor/Outdoor cable, LazrSPEED®, Low Smoke Zero HalogenRiser Distribution Cable, 24 fiber single-unit, Gel-free, Multimode OM4,Feet jacket marking, Black jacket color, Dca flame ratingProduct ClassificationRegional AvailabilityAsia | Australia/New Zealand | EMEA | Latin America | North America PortfolioCommScope®Product TypeFiber indoor/outdoor cable Product Series Z-DSGeneral SpecificationsCable TypeDistribution Construction TypeNon-armored Jacket ColorBlack Jacket MarkingFeet Total Fiber Count 24DimensionsDiameter Over Jacket 8.7 mm | 0.343 inRepresentative ImageMechanical SpecificationsMinimum Bend Radius, loaded130 mm | 5.118 inMinimum Bend Radius, unloaded87 mm | 3.425 inTensile Load, long term, maximum400 N | 89.924 lbfTensile Load, short term, maximum1335 N | 300.12 lbfCompression22 N/mm | 125.623 lb/inCompression Test Method FOTP-41 | IEC 60794-1 E3Flex100 cyclesFlex Test Method FOTP-104 | IEC 60794-1 E6Impact 5.88 N-m | 52.042 in lbImpact Test Method FOTP-25 | IEC 60794-1 E4Strain See long and short term tensile loadsStrain Test Method FOTP-33 | IEC 60794-1 E1Twist10 cyclesTwist Test Method FOTP-85 | IEC 60794-1 E7Vertical Rise, maximum500 m | 1,640.42 ftOptical SpecificationsFiber Type OM4, LazrSPEED® 550 | OM4, LazrSPEED® 550Environmental SpecificationsInstallation temperature-30 °C to +60 °C (-22 °F to +140 °F)Operating Temperature-40 °C to +70 °C (-40 °F to +158 °F)Storage Temperature-40 °C to +75 °C (-40 °F to +167 °F)Cable Qualification Standards ANSI/ICEA S-104-696 | EN 187105 | Telcordia GR-20 (waterpenetration) | Telcordia GR-409EN50575 CPR Cable EuroClass Fire Performance DcaEN50575 CPR Cable EuroClass Smoke Rating s1aEN50575 CPR Cable EuroClass Droplets Rating d1EN50575 CPR Cable EuroClass Acidity Rating a2Environmental Space Low Smoke Zero Halogen (LSZH) | RiserFlame Test Listing NEC OFNR-ST1 (ETL) and c(ETL)IEC 60332-3 | IEC 60754-2 | IEC 61034-2 | UL 1666 | UL 168526Page ofFlame Test Method IEC 60332-3 | IEC 60754-2 | IEC 61034-2 | UL 1666 | UL 1685 Jacket UV Resistance UV stabilizedWater Penentration24 hWater Penentration Test Method FOTP-82 | IEC 60794-1 F5Environmental Test SpecificationsCable Freeze Test Method IEC 60794-1 F15Heat Age-40 °C to +85 °C (-40 °F to +185 °F)Heat Age Test Method IEC 60794-1 F9Low High Bend-40 °C to +70 °C (-40 °F to +158 °F)Low High Bend Test Method FOTP-37 | IEC 60794-1 E11Temperature Cycle-40 °C to +70 °C (-40 °F to +158 °F)Temperature Cycle Test Method FOTP-3 | IEC 60794-1 F1Packaging and WeightsCable weight67 kg/km | 45.022 lb/kftRegulatory Compliance/CertificationsAgency ClassificationCENELEC EN 50575 compliant, Declaration of Performance (DoP) availableCHINA-ROHS Below maximum concentration valueISO 9001:2015Designed, manufactured and/or distributed under this quality management systemREACH-SVHC Compliant as per SVHC revision on /ProductComplianceROHS CompliantUK-ROHSCompliantIncluded ProductsCS-5K-TB–LazrSPEED® 550 OM4 Bend-Insensitive MultimodeFiber* FootnotesOperating Temperature Specification applicable to non-terminated bulk fiber cablePage of36LazrSPEED® 550 OM4 Bend-Insensitive Multimode FiberProduct ClassificationPortfolio CommScope®Product Type Optical fiberGeneral SpecificationsCladding Diameter125 µmCladding Diameter Tolerance±0.8 µmCladding Non-Circularity, maximum 1 %Coating Diameter (Colored)254 µmCoating Diameter (Uncolored)245 µmCoating Diameter Tolerance (Colored)±7 µmCoating Diameter Tolerance (Uncolored)±10 µmCoating/Cladding Concentricity Error, maximum12 µmCore Diameter50 µmCore Diameter Tolerance±2.5 µmCore/Clad Offset, maximum 1.5 µmProof Test689.476 N/mm² | 100000 psiTight Buffer Diameter900 µmTight Buffer Diameter Tolerance±40 µmMechanical SpecificationsMacrobending, 15 mm Ø mandrel, 2 turns0.20 dB @ 850 nm | 0.50 dB @ 1,300 nmMacrobending, 30 mm Ø mandrel, 2 turns0.10 dB @ 850 nm | 0.30 dB @ 1,300 nmMacrobending, 75 mm Ø mandrel, 100 turns0.50 dB @ 1,300 nm | 0.50 dB @ 850 nmCoating Strip Force, maximum8.9 N | 2.001 lbfCoating Strip Force, minimum 1.3 N | 0.292 lbfDynamic Fatigue Parameter, minimum18Optical SpecificationsNumerical Aperture0.246Page ofPage of 56Numerical Aperture Tolerance±0.015Point Defects, maximum0.15 dB Zero Dispersion Slope, maximum0.105 ps/[km-nm-nm]Zero Dispersion Wavelength, maximum1316 nm Zero Dispersion Wavelength, minimum 1297 nmOptical Specifications, Wavelength Specific1 Gbps Ethernet Distance1,110 m @ 850 nm | 600 m @ 1,300 nm 10 Gbps Ethernet Distance550 m @ 850 nm Attenuation, maximum1.00 dB/km @ 1,300 nm | 3.00 dB/km @ 850 nm Backscatter Coefficient-68.0 dB @ 850 nm | -75.7 dB @ 1,300 nm Bandwidth, Laser, minimum4,700 MHz-km @ 850 nm | 500 MHz-km @ 1,300 nm Bandwidth, OFL, minimum3,500 MHz-km @ 850 nm | 500 MHz-km @ 1,300 nm Differential Mode Delay0.70 ps/m @ 850 nm | 0.88 ps/m @ 1,300 nm Differential Mode Delay NoteSuperior to TIA-492AAAC and IEC 60793-2-10 at 850 nm Index of Refraction1.479 @ 1,300 nm | 1.483 @ 850 nm Standards Compliance IEC 60793-2-10, type A1a.3a | IEC 60793-2-10, type A1a.3b | TIA-492AAAD (OM4)Environmental SpecificationsHeat Aging, maximum0.20 dB/km @ 85 °C Temperature Dependence, maximum0.1 dB/km Temperature Humidity Cycling, maximum0.2 dB/km Water Immersion, maximum 0.20 dB/km @ 23 °CRegulatory Compliance/CertificationsAgencyClassification ISO 9001:2015Designed, manufactured and/or distributed under this quality management system* FootnotesTemperature Dependence, maximum Temperature dependence is conducted at -60 °C to +85 °C (-76 °F to +185 °F)Temperature Humidity Cycling, maximum Temperature humidity cycling is conducted at -10 °C to +85 °C (+14 °F to +185 °F)up to 95% relative humidity66Page of。