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dark matter/dark energy

Summaries of Spacetime, Relativity, and Quantum Theories for beginning and advanced visitors, with Links to the Best Websites on Space,Time, Einstein's Relativity, Quantum Gravity, Quantum Physics, Dark Matter and Energy, plus a discussion of the possibility that we live in an essentially atemporal universe.

Summaries of Spacetime, Relativity, and Quantum Theories for beginning and advanced visitors.

In quantum mechanics, the concept of matter waves or de Broglie waves reflects the wave–particle duality of matter. The theory was proposed by Louis de Broglie in 1924 in his PhD thesis. The de Broglie relations show that the wavelength is inversely proportional to the momentum of a particle and is also called de Broglie wavelength. Also the frequency of matter waves, is directly proportional to the total energy E (sum of its rest energy and the kinetic energy) of a particle.

In quantum mechanics, the concept of matter waves or de Broglie waves reflects…

An Infographic Explaining The Mind Boggling Anti-Matter.

I do not agree with the Big Bang theory on anti-matter, but the rest of this is very informative. I think I agree with Feynman's theory on anti-matter.

A "super photon" created when physicists turned photons of light into a state of matter called a Bose-Einstein condensate.

New kind of light created in physics breakthrough

A "super photon" created when physicists turned photons of light into a state of matter called a Bose-Einstein condensate.

Albert Einstein proposed that matter curves space-time, and that gravity is the curve that causes objects to deviate from traveling a straight line. The distortion causes the objects that were moving along a flat plane to fall into a spherical path.

What Is Gravity?

Albert Einstein proposed that matter curves space-time, and that gravity is the curve that causes objects to deviate from traveling a straight line. The distortion causes the objects that were moving along a flat plane to fall into a spherical path.

According to Einstein's General Theory of Relativity, matter bends the fabric of space and time.

How Warp Speed Works

Einstein, Relativity and the Space-time Continuum - The space-time continuum describes how space and time are relative and how objects in motion experience time more slowly. Learn about the space-time continuum.

Ask Ethan #88: Where is the Cosmic Microwave Background? – Starts With A Bang! – Medium

Ask Ethan #88: Where is the Cosmic Microwave Background?

Dark energy is real, say astronomers — Dark energy, a mysterious substance thought to be speeding up the expansion of the Universe is really there, according to a team of astronomers at the University of Portsmouth and LMU University Munich.

The mystery surrounding the source of the highest-energy particles known in the Universe has grown deeper.    The particles, known as cosmic rays, can show up with energies a million times higher than the biggest particle accelerators on Earth can produce.

'Extreme Universe' puzzle deepens

The mystery surrounding the source of the highest-energy particles known in the Universe has grown deeper. The particles, known as cosmic rays, can show up with energies a million times higher than the biggest particle accelerators on Earth can produce.

The scattering of photons from charged particles is called Compton scattering after Arthur Compton who was the first to measure photon-electron scattering in 1922. When the incoming photon gives part of its energy to the electron, then the scattered photon has lower energy and according to the Planck relationship has lower frequency and longer wavelength. The wavelength change in such scattering depends only upon the angle of scattering for a given target particle.

Development of QT: Compton Scattering

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