Kennedy and Illingworth attempted to carry out this experiment with a half-wave step. One of its conductors later worked with Dayton Miller to resolve the problem that this experiment raised. The setup of this experiment was 
Kennedy and Illingworth attempted to carry out this experiment with a half-wave step. One of its conductors later worked with Dayton Miller to resolve the problem that this experiment raised. The setup of this experiment was constructed atop a slab of marble floating in a pool of mercury. One of this experiment's conductors created a namesake interferometer to split a single light source into two beams of light. For 10 points, name this experiment, the null result of which discredited the existence of luminiferous [loo-mih-NIH-fer-us] ether.
Kennedy and Illingworth attempted to carry out this experiment with a half-wave step.
{Michelson}-{Morley} experiment