Radiation Therapy Physics

Concepts Review Blog

Sara Lorraine Gill, MSRS, CMD

Medical Dosimetrist and Educator

What is matter

What is matter

Sara Lorraine Gill
Published on: 11/02/2026

What is matter? Matter is anything that has mass and occupies space. That means everything around us is made of matter. Regardless of size, it all counts because it takes up space and has mass and therefore weight.

RTPhysics Concept Review

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