Astronomy View all facts Glossary Help| Astronomy View all facts Glossary Help |
| physical object > natural object > particle > boson > carrier boson > photon > optical > blue |
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| blue comparison table | ||
| Subject | is a kind of | has definition |
|---|---|---|
| optical | photon | Electromagnetic radiation with wavelengths of or close to those detectable by the eye. |
| blue | optical |