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Physics Facts

Mind-blowing facts about the universe, quantum mechanics, and the fundamental laws of nature

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01

Time Dilation

Time passes slower for objects moving at high speeds. GPS satellites have to account for this effect - their clocks run 38 microseconds faster per day than clocks on Earth.

Relativity
02

Schrödinger's Cat

In quantum mechanics, a particle can exist in multiple states simultaneously. Schrödinger's famous thought experiment illustrates this "superposition" with a cat that's both alive and dead.

Quantum
03

Black Hole Density

If you compressed the entire Earth to become a black hole, it would only be about 1.7 centimeters in diameter - roughly the size of a marble!

Cosmos
04

Neutrinos Everywhere

About 100 trillion neutrinos pass through your body every second! These "ghost particles" interact so weakly with matter that most of them go right through the Earth.

Particles
05

Quantum Entanglement

When two particles become entangled, measuring one instantly affects the other - even if they're on opposite sides of the universe. Einstein called this "spooky action at a distance."

Quantum
06

Speed of Light

Light travels at 299,792,458 meters per second. At this speed, you could circle the Earth 7.5 times in just one second!

Relativity
07

Sun's Core Temperature

The core of the Sun reaches temperatures of about 15 million degrees Celsius. That's hot enough to fuse hydrogen atoms into helium, releasing enormous amounts of energy.

Cosmos
08

Empty Atoms

Atoms are 99.9999999% empty space. If you removed all the empty space from the atoms in your body, you'd fit in a space smaller than a grain of sand!

Particles
09

Quantum Tunneling

Particles can "tunnel" through barriers they shouldn't be able to cross. This quantum effect is essential for nuclear fusion in stars and makes USB flash drives work!

Quantum
10

Expanding Universe

The universe is expanding, and distant galaxies are moving away from us faster than the speed of light! This doesn't violate relativity because it's space itself that's expanding.

Cosmos
11

Gravity Bends Light

Massive objects curve spacetime, bending light around them. This "gravitational lensing" allows astronomers to see objects behind other galaxies!

Relativity
12

Antimatter Power

When antimatter meets matter, they annihilate and convert 100% of their mass to energy. One gram of antimatter would release energy equivalent to 21.5 kilotons of TNT!

Particles

Did You Know?

The Higgs boson was nicknamed the "God particle" not because of religious significance, but because physicist Leon Lederman wanted to call it the "Goddamn particle" (due to how difficult it was to detect), and his publisher changed it!