Thursday, July 16, 2015

Crash Course on Light



Here's a quick overview of the science of light at the subatomic and astronomical level.

Crash Course. (Link to video) Thanks, Robnonstop

5 comments:

Jenna Berry said...
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Susan Krzywicki said...

That was great fun!

The_Mad_Pirate said...

A lesser known fact for artists is that tinting is acually a convolution operation between the light source and the image color (not spatial ) frequency spectra.

The_Mad_Pirate said...

He passes up differences between absortion spectra ( pigment or substractive color model ) and emition spectra ( light or additive color model ). Although it's not hard to understand , an electron jumps to a very specific energy level on absortion , but goes down through all intermidiate energy levels on emition , making light percivied from light emitiong sources ( i.e. a TV screen ) "richier" than light percieved from light absorbing sources ( i.e. a printed image ).

Roberto Quintana said...

Here’s another interesting bit of info to consider when thinking about the colors of light: Even though EM energy is made of waves, and we can combine different colored light, A+B, to make a third color, C, the EM waves do not interfere w each other (like sound-waves, or liquid-waves), A+B (does not =) C (a new wavelength energy); A+B = (A+B) a combination of the two wavelengths (not an admixture or interference), and C is ‘percieved’ by our visual-sensors/brain/thing. But w pigments, we are creating a new chemistry: A+B = C, where C has the property of reflecting the wavelength = C.
Thanks for the link, James! -RQ