In the 19th century most physicists accepted the old idea that all of space is filled with an elusive substance called the “luminiferous ether”. It was well known that. You were a sensical theory, luminiferous ether. And physicists love when things make sense. But science need not make sense—the universe. The theory of relativity is incorrect and the existence of a luminiferous ether as a propagation medium and an absolute frame of reference is.

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Its initial viability faded as Lorentz was forced to make more complex and implausible assumptions.

The Luminiferous Ether.

Thus at any point there should be one special coordinate system, “at rest relative to the aether”. Hooke endorsed the idea of the existence of the ether in his work Micrographiaand other several philosophers luminifefous the 17th century, including Huygensdid the same.

In contrast to the modern understanding that heat radiation and light are both electromagnetic radiationNewton viewed heat and light as two different phenomena.

You’re gonna have this disturbance, which is this wave, this lump that I just generated. The sun is orbiting around the center of the galaxy.

Bradley explained this effect in the context of Newton’s corpuscular theory of light, by showing that the aberration angle was given by simple vector addition of the Earth’s orbital eyher and the velocity of the corpuscles of light, just as vertically falling raindrops strike a moving object at an angle.


In principle, lumihiferous instrument either not susceptible to shrinking or vastly more sensitive would be able to detect Earth’s motion.

Now, what we’re gonna do in future videos, is we’re gonna test that. In and [A 14] [A 15] he physically interpreted Lorentz’s local time as the result of clock synchronization by light signals.

Luminiferous aether

A series of increasingly complex experiments had been carried out in the late 19th century to try to detect the motion of the Earth through the aether, and had failed to do so. If I were to shine some light, one way to think about it is these slits are the only place where the disturbance gets through and then it would cause the light to propagate from each of them like that.

Explaining stellar aberration in the context of an aether-based theory of light was regarded as more problematic.

We’re talking about a disturbance. It used an interferometer that extended from the basement to the top floor of a building. This entry contributed by Leonardo Motta Ether, or luminiferous Ether, was the hypothetical substance through which electromagnetic waves travel.

It’s a good name for a band. Philosophical Transactions of the Royal Society A.

It was thought that if Earth’s motion disturbed the ether, then starlight would be deflected in a manner inconsistent with this well-known effect. By the early 20th century, aether theory was in trouble. Proceedings of the Royal Society. An important nineteenth-century scientific question was the relationship between the ether and material bodies moving through it.

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Light and the luminiferous ether

Each beam is directed along one of two mutually perpendicular interferometer arms, then reflected by a mirror back along its path lyminiferous recombine with the other beam. These are the first recorded historical links between the fther of light and electromagnetic phenomena. Although Michelson and Morley expected a fringe-shift, they once again obtained a null-result. However, this constancy was not absolute.

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The inferred physical properties of the ether were problematic—to support the high-frequency transverse oscillations of light, it would have to be very rigid, but its lack of effect on planetary motion…. Well, for a long time, people said, well it must be. Charles Scribner’s Sons, pp. You have this traveling disturbance. Date format All articles with unsourced statements Articles with unsourced statements from October Articles with unsourced statements from January All pages luminiferpus factual verification Wikipedia articles needing factual verification from Erher Commons category link is on Wikidata.