The most important conclusion to be drawn from the Michelson-Morley experiment is that
A) the speed of light is influenced by the direction of motion.
B) the Earth is not an inertial reference frame.
C) light does not travel through a luminiferous ether.
D) the Earth's orbital speed around the Sun is constant.

Question

Quizplus · Accepted Answer

The Michelson-Morley experiment was designed to detect the existence of a luminiferous ether, which was believed to be the medium through which light waves traveled. The experiment showed that there was no detectable difference in the speed of light when measured in different directions, which led to the conclusion that light does not travel through a luminiferous ether. This discovery was a major blow to the prevailing scientific theories of the time and paved the way for the development of modern physics.

The Most Important Conclusion to Be Drawn from the Michelson-Morley