This is what happens when Two Black Holes Collide.

This is the animation of the final stages of a merger between two black holes. What is particularly interesting about this animation is that it highlights a phenomenon known as Gravitational Lensing.

What is Gravitational Lensing?

Mass bends Light. What? 

Yeah, mass can bend Light. The gravitational field of a really massive object is super strong. And this causes light rays passing close to that object to be bent and refocused somewhere else.

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The more massive the object, the stronger its gravitational field and hence the greater the bending of light rays – just like using denser materials to make optical lenses results in a greater amount of refraction.

Here’s an animation showing a black hole going past a background galaxy.

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This effect is one of the predictions of Einstein’s Theory of General Relativity 

PC: cfhtlensUrbane Legend

The Crazy- Einstein Beats Phenomenon.

When two laser beams at slightly different frequencies are combined onto a screen, the resulting interference pattern produces “beats” in time (i.e. the pattern alternates between light and dark), similar to how the sound produced by two slightly out of tune guitar strings plucked simultaneously will wobble between loud and soft. 

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Why is this special?

In everyday life the beating of light waves is usually undetectable, because 

(1) most light we see is incoherent and 

(2) our eyes cannot resolve beat frequencies beyond a few tens of cycles per second. 

Since visible light waves oscillate at several hundred trillion cycles per second, finding two light sources with a relative frequency difference small enough to observe by eye is generally believed to be prohibitively difficult.

Shattering Barriers.

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We get around this difficulty by building an interferometer, which splits apart a laser beam along two paths, and then shifting the frequencies of the light beam along each path by slightly different amounts. When the beams are recombined, the interference pattern they produce will wobble at a rate equal to the frequency difference between the beams. 

If you are interested, you can read about the Laser Gyroscope and the source research paper as well. 

Cheers! 

PC: acs-psu.

The week disintegration.

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The pillars of creation.

1. Knock down the empire state building with physics- Chain Reaction!.

2. The truth about the education system.

3. Einstein, Dirac, Pauli, Marie Curie, Bohr, Schrodinger and many more of the scientific greats. All in one epic picture.

4. How does an eraser work?

5. Slow Motion Madness- Shattering a CD.

6. How far is the moon?

7. Pyrotechnics101- Methane Bubbles.

Einstein, Dirac, Pauli, Marie Curie, Bohr, Schrodinger and many more of the scientific greats. All in one epic picture.

The Solvay Conference,1927.

Back row: Auguste Piccard, Émile Henriot, Paul Ehrenfest, Édouard Herzen, Théophile de Donder, Erwin Schrödinger, Jules-Émile Verschaffelt, Wolfgang Pauli, Werner Heisenberg, Ralph Howard Fowler, Léon Brillouin. Middle: Peter Debye, Martin Knudsen, William Lawrence Bragg, Hendrik Anthony Kramers, Paul Dirac, Arthur Compton, Louis de Broglie, Max Born, Niels Bohr. Front: Irving Langmuir, Max Planck, Marie Sklodowska Curie, Hendrik Lorentz, Albert Einstein, Paul Langevin, Charles-Eugène Guye, Charles Thomson Rees Wilson, Owen Willans Richardson.

The Week Amalgamation.

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The Hubble telescope’s 25th anniversary photograph released by NASA.

1 .Vegas Baby!

2. A Happy Realization.

3. Meet Galle- The happy face crater from mars.

4. Do light bulbs twinkle?

5. Einstein explains his famous equation E=mc2.

6. And you thought Physics was boring?

7.Other places in the universe and their surfaces.

Einstein Explains his Famous Equation E = mc2

“It followed from the special theory of relativity that mass and energy are both but different manifestations of the same thing — a somewhat unfamiliar conception for the average mind. Furthermore, the equation E is equal to m c-squared, in which energy is put equal to mass, multiplied by the square of the velocity of light, showed that very small amounts of mass may be converted into a very large amount of energy and vice versa. The mass and energy were in fact equivalent, according to the formula mentioned above. This was demonstrated by Cockcroft and Walton in 1932, experimentally.”

Einstein Explains his Famous Equation E = mc2

“It followed from the special theory of relativity that mass and energy are both but different manifestations of the same thing — a somewhat unfamiliar conception for the average mind. Furthermore, the equation E is equal to m c-squared, in which energy is put equal to mass, multiplied by the square of the velocity of light, showed that very small amounts of mass may be converted into a very large amount of energy and vice versa. The mass and energy were in fact equivalent, according to the formula mentioned above. This was demonstrated by Cockcroft and Walton in 1932, experimentally.”