For some event, observer A measures E = (, 0, 0) and B = (/c, 0, 2/c) and observer B measures E' = (E' x

For some event, observer A measures E = (α, 0, 0) and B = (α/c, 0, 2α/c) and observer B measures E' = (E'_x, α, 0) and B' = (α/c, B'y, α/c). Observer C moves with velocity νx̂ with respect to observer B. Find 

(a) The fields E' and B' measured by observer B; 

(b) The fields E" and B" measured by observer C.