Switch to Twig Science to check out our NGSS product.
Lasers are associated with tremendous heat, but some physicists have been using them to reach the coldest temperatures ever recorded on Earth – absolute zero.
Absolute zero = 0 K or -273.15°C
The temperature at which atoms within substances cease to move.
Experiments in the 1900s, using liquefied gases, hydrogen and helium, brought …
Please log in to view and download the complete transcript.