The rad is a deprecated unit of absorbed radiation dose, defined as 1 rad = 0.01 Gy = 0.01 J/kg. It was originally defined in CGS units in 1953 as the dose causing 100 ergs of energy to be absorbed by one gram of matter. It has been replaced by the gray in most of the world. A related unit, the roentgen, was formerly used to quantify the number of rad deposited into a target when it was exposed to radiation. The F-factor can be used to convert between rad and roentgens.
The material absorbing the radiation can be human tissue or silicon microchips or any other medium (for example, air, water, lead shielding, etc.). Wikipedia, Rad (unit)
See Also
04 - Molecular Radiation
10 - Chart Defining the Angles of Radiation
6.1 - Reciprocal Radiations
7B.04 - Triplets Form Larger Units of Unity
12.02 - Universal Energy Unit Constant or Impulse
12.30 - Thermal Radiation and Thermal Vacuum or Cold
15.08 - Dissociating Water with X-Rays - Radiolysis
17.08 - Gravitation and Radiation Russell
17.09 - Gravitation and Radiation Hatonn
19.05.01 - From The Dynamic Theory of Life and Mind - Radiometer Motion
Apparatus for the Utilization of Radiant Energy - 685957
Celestial Radiation
Celestial Radiation and Terrestrial Outreach
Celestial Sympathetic Radiation
Electromagnetic Radiation
Figure 13.13 - Gravity Syntropic and Radiative Entropic Waves
Figure 13.17 - Focalizing and Reradiating mode of Sympathetic Transmission
Figure 14.08 - Force Contracts to Center - Energy Radiates from Center
Figure 14.09 - Force Contracts to Center - Energy Radiates from Center
Figure 15.03 - Opposing Forces of Gravity and Radiation
Figure 16.06 - Russells Genero-Radiative Coils - Electricity Expands and Contracts
Figure 16.07 - Magnetism is Radiant while Electricity is Concentrative or Assimilative
Figure 17.00 - Opposing Forces of Gravitation and Radiation
Figure 2.3 - Focalizing and Reradiating mode of Sympathetic Transmission
Figure 6.2 - Opposing Repellant Dispersive Radiations Neutralizing at Interface Plane of Inertia Figure 7B.05 - Triplet Forming a Unity
Figure 9.4 - Radiation and Absorption interactions with Neutral Center
Genero-Radiative Concept
Genero-Radiative Concept - Part 2
Genero-Radiative Concept - Part 3
Genero-Radiative Concept - Part 4
Law of Variation of Atomic Pitch by Rad-energy
light units
over-unity
Rad-energy
radar
Radial Center
Radial Forces
Radiant Energy
Radiation
Radio Waves
radio-active
radiometer
Radionics
Sympathetic Radiation
Table 14.02 - Neutral Thirds - Energy Radiates from Center - Force Contracts to Center
Table 15.01 - Negative Radiating Focalizing Bar
Universal Energy Unit
Water Radiolysis