The Third Law of Thermodynamics: The Coldest Temperature Possible

The Third Law says absolute zero (0 K) is the lowest possible temperature in the universe.
At absolute zero, particles would have their lowest possible energy—motion nearly stops.
No laboratory has ever reached absolute zero, only approached it extremely closely.
As systems cool toward 0 K, entropy—the measure of disorder—shrinks toward a minimum.
Absolute zero equals –273.15°C or –459.67°F, a point where classical physics breaks down.
Cooling atoms near this limit reveals quantum effects like Bose–Einstein condensates.
The Third Law explains why it takes infinite steps to remove the last bit of heat.
Space is cold but not the coldest—background temperatures still hover above absolute zero.
Ultra-cold experiments help scientists build super-precise clocks and study quantum computing.
This law draws the line: nothing can ever be colder than absolute zero.