Aim of the Michelson-Morley experiment: The Michelson-Morley experiment was done to confirm the presence of hypothetical medium called ether.
Therefore, one question should be there what was ether? Yes, I have used “was ether” not “is ether”. Let us discuss why?
As we have already discussed in earlier articles that there is nothing like absolute rest. Thus the scientists in the 19th century assumed that our universe is filled with hypothetical medium called ether. Ether was supposed to be transparent and highly elastic.
The main objective of this Michelson-Morley experiment was to check the presence of this medium called ether. The aim was supposed to be fulfilled by measuring the velocity of the earth with respect to the ether. If earth is supposed to be propagating through the stationary ether with a uniform velocity and if a beam of light is sent from source to observer towards the direction of the motion of the earth, then it should take more time if sent through the opposite direction. If this time difference can be measured then velocity of earth with respect to ether can be measured.
Experimental arrangement of Michelson-Morley experiment: Continue reading “Michelson-Morley experiment”