Wavelength

If this distance is large in comparison to the wavelength, this dam simply casts a shadow. 如果這個距離比波長大，那麼這個水壩就會投下陰影。

We want to divide all of this by our wavelength, and to keep our units the same we'll do meters. 我們想用波長除以所有這些，而且為了保持單位統一我們採用米為單位。

The precise thickness at which the fibre traps the light depends on the wavelength of that light. 纖維捕捉光束的確切厚度取決於那條光束的波長。

The precise thickness at which the fibre traps the light depends on the wavelength of that light. 纖維捕捉光束的確切厚度取決於那條光束的波長。

If the distance between the wall and the dam was large in comparison to the wavelength, then what happens? 如果牆和壩之間的距離比波長大，那麼會導致什麼？

De Broglie, 1924, in his PhD thesis says, if an electron has wave-like properties, this would be its wavelength. 1924年德布羅意在他的博士畢業論文中説道，如果一個電子具有類似波的性質，這就是它的波長。

Since we have my red laser pointer, we will also try with the red laser pointer, which is centered at wavelength of 700 nanometers. 因為我們有我的紅色激光筆，我們也會嘗試紅色激光筆，它的中心波長是 700納米。

All substances, all forms of matter, can be distinguished according to what wavelength of light they absorb and which ones they reflect. 所有形式的物質，都可以根據它們吸收的光的波長以及反射的光的波長來區分。

Just remember that violet light is the end that actually has the shortest wavelength, which means that it also has, of course, the highest frequency. 只要記住，紫色光在末端，實際上，它有最短的波長，意味着它當然也有最高的頻率。

The assumption of constant relative humidity is important, because water vapor in the atmosphere is another efficient absorber of radiation at infrared wavelength. 相對濕度恆定的假設是重要的，因為大氣中的水蒸氣是紅外波長輻射的另一種有效吸收劑。

I am sure you all know from physics class about how light moves in microscopic ways and that we can only see light when the wavelength of that light is in a specific range. 我相信，你們在物理課上都學過光是如何以微觀的方式運動的，以及只有在光的波長在特定的範圍內時我們才能看到光這一事實。

This fascinating experiment showed that plants not only detect and react to specific wavelengths of light, plants can also detect and react to changes in the ratio of one wavelength to another. 這個有趣的實驗表明，植物不僅能探測和對特定波長的光產生反應，還能探測不同波長比率的變化並對其做出反應。

We could complete each other's sentences because we were on the same wavelength. 我們可以彼此把沒説完的句子接完整，因為我們志趣相投。

She found the wavelength of their broadcasts, and left the radio tuned to their station. 她找到了他們廣播的波段，把收音機調到他們的電台上。

All we can measure is the wavelength. 我們能測量的是波長。

We know that nu is equal to c over wavelength. 我們知道υ等於c除以波長。

Light at that exact wavelength would normally be totally absorbed. 這個波長上的光通常被完全吸收。

These effects, Catchpole says, "are usually very sensitive to wavelength". 卡崔布爾説：“這些光譜效應經常隨波長而變。”

This wavelength corresponds to one of the best Windows in the atmosphere. 該波長正處於大氣最佳窗口之一。

You always must be sure that you have a good calibration of your wavelength. 你們必須確定，對於波長有一個，很好的標度。

This wavelength of light can penetrate several centimetres into the skin. 這種光波可以穿透皮膚幾釐米深。

This is because the wavelength of visible light is longer than 200 nanometres. 因為可見光的波長大於200納米。

We have a UV lamp right here, which is centered at a wavelength of 254 nanometers. 我們有一個紫外燈在這裏，波長集中在254納米處。

The wavelength, and hence the colour, of this light depends on the size of the dot. 光線的波長——即是對應着其顏色——取決於該微粒的尺寸。

The longest wavelength, 22 micrometers, is shown in red, capturing larger dust grains. 波長最長的達22微米的紅色顯示的是捕捉到的較大的宇宙塵埃顆粒。

He went to a bar, in the bar, a short wavelength radio was broadcasting pop music. 酒吧裏一台短波長的收音機正在播放流行音樂。

Those lasers produce one wavelength of light that doesn't stop unless the power is cut. 這些激光器產生一個具有波長的光，它不會停止，除非電源被切斷。

So cones hit by underwater rays are primed to sense longer-wavelength yellow light. 因此從水面下的錐體對長波黃光敏感而水面上的錐體對短波綠光敏感。

Neutralhydrogen emits radiation on a characteristic 21cm wavelength, while ionisedhydrogen does not. 中性氫輻射出離子化氫所沒有的特有的21釐米波長。 ^[1]