Many of the scientist who were featuring as having brilliant experiments efforts at measuring the speed of light precisions did not know about what. Check all that apply?

a). electronics

b). neutrons

c). atoms

d). electrons

e). lasers

f). protons.

What is one of the biggest differences between our setups that were measuring for the c, and with the earlier set ups experiments efforts for measuring for c.

a). We don't use the low technical devices like mirrors or lenses

b). we use a laser

c). we are not going to measure the value of c. We have a toy apparatus that of not high enough quality.

d). We use a laser with a carve with a notched timing wheel.