Understanding light notes
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Understanding Light- Notes PowerPoint PPT Presentation


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Understanding Light- Notes. Reflection of light:. Mirrors and smooth objects reflect light to form clear images. Refraction of light:. When light waves bend they separate into the ROY G BIV colors. Prisms, Diffraction Gratings, and Spectroscopes are tools used to refract light.

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Understanding Light- Notes

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Understanding Light- Notes


Reflection of light:

Mirrors and smooth objects reflect light to form clear images.


Refraction of light:

When light waves bend they separate into the ROY G BIV colors.

Prisms, Diffraction Gratings, and Spectroscopes are tools used to refract light.


Transmission of light:

Light waves pass through space or a medium.

Materials that can transmit light are either transparent or translucent.

Transparent- clear material that allows light to pass easily. The image is not distorted.

Translucent- material that appears “hazy” or “foggy”. The image is distorted.


Absorption of light:

When objects absorb light they become warmer because the energy is not “passed” on.

Materials that cannot transmit light are opaque.

Opaque- material that transmits no light.


How do we perceive objects as having color?

The wavelength of light reflected off an object will be the color we see.

Ex: A red apple….reflects red light

Absorbs _OY G BIV


What about that black cat?

ROY G BIV is

absorbed (all light)

No light is reflected back to

our eye


Black objects:absorb all wavelengths of light (ROY G BIV)

White objects:reflect all wavelengths of light (ROY G BIV)


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