For more than 2,000 years, scientists have observed the unique phenomenon that, in some conditions, hot water freezes faster than cold water. In the fourth […]
Tag: Physical Matter and Forces
What Makes a Boomerang Come Back?
The boomerang is one of humanity’s oldest heavier-than-air flying inventions. King Tutankhamen, who lived during the 14th century, owned an extensive collection, and aboriginal Australians […]