Laboratory Familiar World Sun and Solar System Satellite and Detector Star and Binary Our Galaxy Galaxy and Universe Glossary Spectral Gallery
Spectrum! What is it?

In this section, we explain the fundamental knowlege on X-ray Spectrum: Light and Color, Electromagnetic Spectrum, X-ray and Spectral Diagram, and the History of X-ray Astronomy.


Light and Color

ELectromagnetic Wave

EMW and Photon

X-ray and
Its Nature

Image and
Spectral Diagram

History of
X-ray Astronomy

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