e more. If the waves of the light have not fallen back in place, the interference fringes of the alternating dark and light bands would show (Waldman, p. 146). The measurements of the exact width of the band along with the exact number of fringes that would be accounted for had measured up to the light ray's velocity. In fact, an equation was even used to intertwine these different components together: lambda = xd/L, where lambda, x, d, and L, equal the length of the wavelength, the distance from the screen, the width of the slit, and the distance of the central bright light to the first-order bright light (Paul W. Zitewitz, Physics: Principles and Problems, New York, NY: McGraw Hill, 1999, p.447).
             Michelsen had full intentions to use his newly created machine to measure Earth's velocity in comparison to ether. Ether was initially considered to have been the basic rock layer of the world. Michelsen concluded that if Earth were to be moving through ether, while simultaneously carrying out light, consequently, the speed of the light would have to be equivalent to the sum of the velocity of light and Earth. The speed of light that passed thr
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