Quantum, Relativity & Forces Explained | Pixelated Physics

28 articles

Pixel-art chamber where six red laser beams cross in three opposed pairs on a glowing cloud of cold atoms, the optical molasses of laser cooling

Laser Cooling: How Light Chills Atoms Near Abso...

Shining a laser at something usually warms it. Tuned just right, laser light can instead slow atoms from hundreds of metres per second to a few centimetres per second, cooling...

Laser Cooling: How Light Chills Atoms Near Abso...

Shining a laser at something usually warms it. Tuned just right, laser light can instead slow atoms from hundreds of metres per second to a few centimetres per second, cooling...

Pixel-art glowing blue staircase of flat plateaus climbing into a violet night sky, the resistance steps of the quantum Hall effect

The Quantum Hall Effect Explained: Resistance i...

Cool a thin layer of electrons to a few degrees above absolute zero, add a strong magnetic field, and its Hall resistance stops changing smoothly and climbs in flat steps....

The Quantum Hall Effect Explained: Resistance i...

Cool a thin layer of electrons to a few degrees above absolute zero, add a strong magnetic field, and its Hall resistance stops changing smoothly and climbs in flat steps....

Pixel-art glowing source sending two beams to two distant ornate detectors, illustrating a Bell test on entangled particles

Bell’s Theorem Explained: How We Know Quantum W...

Einstein suspected quantum mechanics was missing hidden instructions. In 1964 John Bell found a way to test that idea, and experiments from 1972 to 2015 settled it against local hidden...

Bell’s Theorem Explained: How We Know Quantum W...

Einstein suspected quantum mechanics was missing hidden instructions. In 1964 John Bell found a way to test that idea, and experiments from 1972 to 2015 settled it against local hidden...

Pixel-art orb trembling at the bottom of an energy valley, never fully at rest, illustrating zero-point energy

What Is Zero-Point Energy? Why Nothing Is Ever ...

Cool anything to absolute zero and quantum physics still will not let it stop moving. The leftover energy, ħω/2 for every oscillator, is called zero-point energy. Here is where it...

What Is Zero-Point Energy? Why Nothing Is Ever ...

Cool anything to absolute zero and quantum physics still will not let it stop moving. The leftover energy, ħω/2 for every oscillator, is called zero-point energy. Here is where it...

Pixel-art sphere with a lime loop and violet arrows carried around it, captioned a loop remembers its area

Berry Phase: The Phase a Quantum State Picks Up...

Carry a quantum state slowly around a closed loop and it comes back with an extra phase that depends only on the shape of the loop, not on how long...

Berry Phase: The Phase a Quantum State Picks Up...

Carry a quantum state slowly around a closed loop and it comes back with an extra phase that depends only on the shape of the loop, not on how long...

Pixel-art star sending clumps of lime and cyan photons to two violet detectors joined by a correlator line, titled photons like to arrive together

The Hanbury Brown–Twiss Effect: Why Photons Bunch

Light from a star arrives in clumps: photons are more likely to show up together than a random stream would allow. Here is how two radio astronomers found the effect,...

The Hanbury Brown–Twiss Effect: Why Photons Bunch

Light from a star arrives in clumps: photons are more likely to show up together than a random stream would allow. Here is how two radio astronomers found the effect,...