Saturday, June 27, 2009

Laser Hair Removal In Kansas: A red laser pointer emits light with a wavelength of 730nm. What is the frequency of this light?

What is the energy of 1 hair of these photons?

answer:frequency=speed of light / wavelength. so frequency = 2.9979 x 10^8 m/s divided by 730 x 10^-9 mso frequency = 4.107 x 10^14 / second

No comments:

Post a Comment

Note: Only a member of this blog may post a comment.