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  • Topic: Wavelength.

  • Why red is used as a danger signal?

  • Well.

  • Because my teacher said so.

  • As usual, you are wrong.

  • The major reason for red to be used as a danger signal is its wavelength.

  • I know.

  • Wavelength is the distance between two sea waves.

  • No.

  • In the wave theory of light.

  • The distance between successive crests or troughs is called wavelength.

  • Longer the wavelength, lesser will be the scattering of light.

  • Now, among the colors of visible light, red has the longest wavelength.

  • Hence, it is least scattered by the atmospheric particles.

  • As a result, whether it is fog or smoke, red light passes comparatively easily through them.

  • Thus, it can be seen from maximum distance, making red color the right choice to convey any danger.

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波長 - 為什麼紅色被用作危險信號?|#aumsum (Wavelength - Why red is used as a danger signal? | #aumsum)

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    AumSum 發佈於 2021 年 01 月 14 日
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