As the 19th century came to a close, physicists were feeling pretty satisfied with the state of their science. The great edifice of physical theory seemed complete. A few minor experiments remained to ...

THIS book is a more elaborated presentation of the views as the nature of æther set forth by the author in a pamphlet published in 1898. The æther is “regarded as possessing properties such: s might ...

THE appearance of a connected account of the Principle of Relativity in our own language will be welcomed by many as an opportunity of acquainting themselves in more detail with the ins and outs of a ...

Reader Nick Canning says the aether theory was “ascientific”(28 January, p 54). However, this theory was one of the most fruitful in the history of science. It was useful during the development of ...

It's another victory for Einstein -- albeit not a resounding one. General relativity has been confirmed at the largest scale yet. But the galactic tests used to put the theory through its paces cannot ...

Science continually evolves, moving away from once-accepted theories that now seem outdated. This video explores five ...

Letter from Augustin Fresnel to Fraņcois Arago, on the influence of the movement of the earth on some phenomena of optics -- On the aberration of light / by G.G. Stokes -- On the relative motion ...

The theory of relativity describes two connected scientific theories developed by the physicist Albert Einstein: special relativity and general relativity. Collectively, relativity is the idea the ...