Definition of atom for Students. 1  1 : the smallest particle of an element that can exist alone or in combination carbon atoms. 2  2 : a tiny particle : bit âI don't believe there's an atom of meaning in it.â â Lewis Carroll, Alice's Adventures in Wonderland.
How Did Mount Everest Get Its Name? The highest mountain in the World, Mount Everest in Nepal was named after and in honour of Sir George Everest who was a British Surveyor General. In 1852 he found it to be the highest peak in the World during the Great Survey of India. It was originally called Mont Everest.
Everest was first named Peak 15 and measured at 29,002 feet in 1856 ; In 1865, it was named Mount Everest, after Sir George Everest; In 1955, the height was adjusted to 29,028 feet and is still used by Nepal; China uses 29,015 feet as the official height today ; Using GPS technology, the summit was measured at 29,035 feet or 8850 meters in 1999