听力原文: What is an atom? The modern view of an atom has come from many fields of chemistry and physics. The idea of an atom came from ancient Greek science and philosophy and from the results of 18th and 19th century chemistry. It includes three aspects, concept of the atom, ...
Atoms are the basic units of matter. Everything in the universe apart from energy is made of matter therefore atoms make up everything in the universe, according toNorthwestern University. The term "atom" comes from the Greek word for indivisible, because it was once thought that atoms were ...
Other Greek philosophers -- most notably Euclid and Ptolemy -- used ray diagrams quite successfully to show how light bounces off a smooth surface or bends as it passes from one transparent medium to another. Arab scholars took these ideas and honed them even further, developing what is now ...
In fact, the word atom comes from a Greek word meaning something that cannot be split up any further. Today, we know this isn't true. In theory, if you had a knife small and sharp enough, you could chop an atom of gold into bits and you'd find smaller things inside. But then ...
In Greek, the prefix "a" means "not" and the word "tomos" means cut. Our word atom therefore comes from atomos, a Greek word meaning uncuttable. ... In 1803, John Dalton formulated the "atomic theory" of matter based on experiments that quantified the weights of elements formed when ...
The word atom is derived from the Greek word atom which means indivisible. The Greeks concluded that matter could be broken down into particles to small to be seen. These particles were calledatoms Matter has mass and takes up space. Atoms are basic building blocks of matter, and cannot be...
Rutherford model, also called Rutherford atomic model, nuclear atom, or planetary model of the atom, description of the structure of atoms proposed (1911) by the New Zealand-born physicist Ernest Rutherford. What is the meaning of leucippus? Leucippus (/luːˈsɪpəs/; Greek: Λεύ...
A Nebula is named after the Greek word for “cloud”. Nebulae (plural) come in many shapes and sizes and have a way of captivating those that observe and photograph these deep sky objects in space. Most nebulae are enormous in size. Some are even hundreds of light-years in diameter. Neb...
What is the biological definition of an atom?AtomThe atom has had a variety of definitions and structural depictions over time. The original definition of atom was the smallest possible particle, from the Greek for "indivisible."Answer and Explanation: ...
Atoms are the basis of the elements. There are 118 known elements in the Periodic Table, 92 of which occur naturally, and each is based on a different atom. The word "atom" comes from the Greek "atomos", meaning something that is uncuttable, or which cannot be split. Once upon a tim...