Matter vs Radiation: What's the Difference?

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Matter is defined as having mass and occupying space, while radiation, specifically photons, lacks both mass and spatial presence. Atoms are classified as matter, whereas photons are not. The term "radiation" can sometimes refer to matter, as seen in neutron radiation. Despite this, the fundamental distinction remains that matter possesses mass, unlike radiation. Understanding these differences is crucial in fields like physics and engineering.
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Hi, What is the difference between Matter and Radiation?
 
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Matter has mass, radiation doesn't.

Thus an atom is matter, but a photon is not.
 
Well, sometimes matter is described as radiation. For example there is Neutron Radiation. But UltrafastPED is pretty much correct. Matter has mass and takes up space, while radiation, which in this case just refers to photons, does not take up space nor do they have mass.
 

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