Only approximately about 8 (17 October 2026) percent of the world’s currency is physical money, the … World’s currencyRead more
Author: Nikolay
The Eiffel Tower
The Eiffel Tower is officially 324 meters high but it’s height changes depending on the season. … The Eiffel TowerRead more
Temperature of a lightning
The average temperature of a lightning bolt is 27700 degrees Celsius, or five times hotter than … Temperature of a lightningRead more
Oxygen can be a solid
Oxygen can be converted into solid too. It becomes solid at a temperature below -218.79 degrees … Oxygen can be a solidRead more
Sound in vacuum
Sound travels faster in water than in air. But it doesn’t travel through a vacuum at … Sound in vacuumRead more