Aston Builds the First Mass Spectrograph and Discovers Isotopes
At a glance:
- Series: Great Events from History II: Science and Technology Series
- Categories: Science, Technology, Inventions
- Subcategories: Scientists, Inventors, Physics, Physicists
- Curriculum: 20th & 21st Century European History, British History
- Geographical Location: England
- Date: 1919
Article abstract: Aston invented the first mass spectrograph to measure the mass of atoms and discovered that the atomic mass of elements is a combination of isotopes.
Summary of Event
Isotopes are one or more forms of a chemical element and act similarly in chemical or physical reactions. Isotopes differ in two ways: They possess different atomic weights and radioactive transformations. In 1803, John Dalton proposed a new atomic theory of chemistry that claimed that chemical elements in a compound combined by weight in whole number proportions to one...
[The entire page is 1769 words long]
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