| Subject |
has definition |
|---|
| astronomy | The science that studies the natural world beyond the earth. |
| biology | The scientific study of life and living matter. |
| chemistry | The scientific study of chemicals and chemical reactions. |
| geology | Scientific study of the dynamics and history of the earth, as evidenced in its rocks, chemicals, and fossils. |
| photonics | The technology of generating and harnessing light and other forms of radiant energy whose quantum unit is the photon for a range of applications ranging from detection to laser energy production to communications and information processing. |
| physics | The scientific study of the interactions of matter and energy. |
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