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quantum physics
Laser Cooling: How Light Slows Atoms to Near Absolute Zero
Laser cooling uses laser light to reduce atomic motion, lowering temperatures to millionths or billionths of a degree above absolute zero. It enables...
Quantum Physics: Definition, Principles, and Why It Matters
Quantum physics is the branch of physics that describes the behavior of matter and energy at atomic and subatomic scales, where particles follow...
Quantum Mechanics: The Physics of Atoms and Subatomic Particles
Quantum mechanics is the branch of physics that describes how matter and energy behave at atomic and subatomic scales, where the rules of...
Double Slit Experiment: The Test That Revealed Two Realities
The double slit experiment shows that light and matter behave as both waves and particles. First performed by Thomas Young in 1801, it...
Bosons: The Particles That Carry Nature's Forces
Bosons are integer-spin subatomic particles that carry nature's forces and can occupy the same quantum state simultaneously.
Bose-Einstein Condensate: The Fifth State of Matter Explained
A Bose-Einstein condensate forms when bosons cool to near absolute zero and merge into one quantum state, creating a fifth state of matter...
Absolute Zero: The Temperature Nothing Can Reach
Absolute zero is the lowest temperature matter can reach, 0 kelvin or -273.15 degrees Celsius, where atoms occupy their lowest energy state but...
The Dirac Equation: How Mathematical Beauty Predicted Antimatter
Paul Dirac's equation predicted antimatter four years before Carl Anderson found the positron. Here's how mathematics revealed a hidden layer of reality.
Why Entangled Particles Can't Send Messages Faster Than Light
John Clauser tried to prove Einstein right about quantum mechanics. Instead, his 1972 experiment helped establish that entanglement is real - while confirming...
Bose-Einstein Condensate: Physicists Create New State of Matter From Molecules
Columbia physicists created the first Bose-Einstein condensate from molecules – a quantum state where particles merge into one entity at five nanokelvin.
