Absorbed dose (also known as total ionizing dose, TID) is a measure of the energy deposited in a medium by ionizing radiation per unit mass. It is equal to the energy deposited per unit mass of medium, which may be measured as joules per kilogram and represented by the equivalent SI unit, gray (Gy), or the antiquated CGS units, rad and rep. The absorbed dose depends not only on the incident radiation but also on the absorbing material: a soft X-ray beam may deposit four times more dose in bone than in air, or none at all in a vacuum. Wikipedia, Absorbed Radiation Dose

See Also

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04 - Molecular Radiation
6.1 - Reciprocal Radiations
10 - Chart Defining the Angles of Radiation
12.30 - Thermal Radiation and Thermal Vacuum or Cold
17.08 - Gravitation and Radiation Russell
17.09 - Gravitation and Radiation Hatonn
Celestial Radiation
Celestial Radiation and Terrestrial Outreach
Celestial Sympathetic Radiation
Electromagnetic Radiation
Figure 15.03 - Opposing Forces of Gravity and Radiation
Figure 17.00 - Opposing Forces of Gravitation and Radiation
Figure 6.2 - Opposing Repellant Dispersive Radiations Neutralizing at Interface Plane of Inertia
Figure 9.4 - Radiation and Absorption interactions with Neutral Center
Radiation
Sympathetic Radiation