Doppler Effect on light question

[asdf1]

In "Concepts of modern physics 6/e by arthur beiser", there's a paragraph on pg11 explaining th effec on the observer moving perpendicular to a line between him and the light source. Why is the proper time between ticks to=1/vo?

 

[mathmike]

either i don't understand the question or something, but i don't think the dopler effect can be applied to light.

 

[Pengwuino]

Hes talking about relativistic doppler effects.

 

[mathmike]

/+-"
/relativistic or not

 

[mathmike]

you mean v observer / v source = sqrt((1+b)/(1-b))

where b = v / c and v source = c / lambda source