Question
In a vacuum, which colour of light travels fastest red, blue, or green? Explain. Which colour travels fastest in a block of glass?
Answers
Elena
In vacuum
v(red)=v(blue)=v(green)= c=3 x10^8 m/s
In glass
v(red)>v(green)>v(blue)
v(red)=v(blue)=v(green)= c=3 x10^8 m/s
In glass
v(red)>v(green)>v(blue)