Recent content by Pentcho Valev

The idea that the wavelength of light can be stretched (by space expansion or anything else) is preposterous. The redshift known as "cosmological" (or "Hubble") is due to the speed of light gradually slowing down as photons travel through space, in a non-expanding universe. See...

Actual or anticipated questions like If the universe is expanding, then why aren't we, why no length has been observed to stretch, why no two things have been observed to move apart pushed by expansion, etc. plague cosmologists so they have alleviated the problem by tweaking the theory. Our...

"No experiment has ever been performed that verifies that expanding space can indeed alter the wavelength of an already moving photon." View: https://youtu.be/94_3N7XZjBQ?t=349 This can be generalized: No length or distance between two entities has ever been observed to change as a result of...

"Some physicists, however, suggest that there might be one other cosmic factor that could influence the speed of light: quantum vacuum fluctuation. This theory holds that so-called empty spaces in the Universe aren't actually empty - they're teeming with particles that are just constantly...

Albert Einstein: "The gravitational force bends the light ray as if light were a catapulted heavy body. This consequence is of great significance in a twofold way. First... [...] Second, this consequence shows that the law of the constancy of the speed of light no longer holds, according to the...

A breathtaking sensation in 2014 (nowadays completely forgotten): "A challenge has been thrown down to the consistency of the speed of light, based on an anomaly from the most closely observed supernovae of all time. In 1987 astronomers witnessed the only supernova in 400 years close enough to...

As light falls in a gravitational field, what happens to its speed? The Newtonian prediction is straightforward (it is so obviously true that even Einsteinians teach it explicitly): James Hartle, Gravity: An Introduction to Einstein's General Relativity, p. 113: "If we accept the equivalence...

"Lee [Smolin] and I discussed these paradoxes at great length for many months, starting in January 2001. We would meet in cafés in South Kensington or Holland Park to mull over the problem. THE ROOT OF ALL THE EVIL WAS CLEARLY SPECIAL RELATIVITY. All these paradoxes resulted from well known...

"Emission theory, also called emitter theory or ballistic theory of light, was a competing theory for the special theory of relativity, explaining the results of the Michelson–Morley experiment of 1887...The name most often associated with emission theory is Isaac Newton. In his corpuscular...

"We've known for decades that space-time is doomed," says Arkani-Hamed. "We know it is not there in the next version of physics." https://www.discovermagazine.com/the-sciences/amplituhedron-may-shape-the-future-of-physics But the ripples in space-time (LIGO's gravitational waves) will be there...

The formula (frequency) = (speed of light)/(wavelength) says that, if the speed of light is constant as per Einstein, then ANY frequency shift entails (is caused by) an inversely proportional wavelength shift. There are frequency shifts without accompanying wavelength shifts (more precisely...

Professor Sidney Redner https://sites.santafe.edu/~redner/: "The Doppler effect is the shift in frequency of a wave that occurs when the wave source, or the detector of the wave, is moving. Applications of the Doppler effect range from medical tests using ultrasound to radar detectors and...

Speed and frequency vary proportionally as light falls in a gravitational field: University of Illinois at Urbana-Champaign: "Consider a falling object. Its speed increases as it is falling. Hence, if we were to associate a frequency with that object the frequency should increase accordingly as...

The underlying assumptions are that the universe is expanding and that the speed of light is constant. However the expanding-universe theory is too preposterous and will soon be abandoned. Then the only reason behind the cosmological (Hubble) redshift will turn out to be GRADUALLY DECREASING...

Consider two galactic clusters relatively close to one another. The light coming from them is redshifted - cosmologists explain that this is because the expansion of space pushes the clusters away from us. But then the expansion must push the clusters away from one another, and the distance...