Question

I need help finding wavelength?

Answer 1

Remember: Wavelength is length of one full period of the wave, frequency is how frequently the wave peaks pass by. You can solve for frequency from wavelength for light using the equation:
\[\nu = \frac{ c }{ \lambda } \]
Where c is the speed of light, nu is the frequency, and lambda is the wavelength.

Answer 2

@mathstudent55 @dan815 @radar @SolomonZelman

Answer 3

@Compassionate @abb0t

Answer 4

http://www.mindskewed.com/wp-content/uploads/2013/08/Wavelength.jpg
http://scienceaid.co.uk/physics/waves/images/wave.png

Answer 5

lamda = v/f

where
lamda = wavelength
v = speed of the wave or velocity (you can figure that out from the diagrams)
f = the frequency (has units s^-1)