Recent content by bluesnake

Hi, i tried already.My teacher only give us this formula. lamdai =lamda o+ lamda(c)Contant* (1-cosdegree) the problem is i don't have the other information n lamda.how to sub ?

A 0.88Mev photon is scattered by a free electron initially at rest such that the scattering angle of the scattered electron is equal to the scattered photon.How to find the angle??