Answer?

[Carlos]

I think the photo you took on 20th June was made with and
old flash light (With a crystal with a round border)

The light in the center is white (as in the original flash light)
and the round border, like a prism, spread the white light into his diferent wave lenghts
Is that correct?

[Guest]

I think the photo you took on 20th June was made with and
old flash light (With a crystal with a round border)

The light in the center is white (as in the original flash light)
and the round border, like a prism, spread the white light into his diferent wave lenghts
Is that correct?

I forgot

ROY G BV
Spectrum of visible light

[Guest]

Hey Roy....you misspelled your last name

[Dan Cordell]

Please keep all discussion related to Dr. Lewin's challenge in this thread.