Form factors for elastic electron scattering parametrise the collectiv
e response of a struck object and provide information vital for the un
derstanding of its ground state. The quality of existing data for the
neutron is much behind that for the proton; it will now benefit from c
oincidence experiments at modern cw accelerators. For the electric for
m factor the scattering of high energy polarised electrons from polari
sed targets or the spin transfer to the recoiling neutron from unpolar
ised targets now exhibits its full potential in running experiments an
d delivers first results.