R has various meanings in the Physics category. Discover the full forms, definitions, and usage contexts of R in Physics.
A ventilation system beneath the floor of a basement and/or structural wood floor and designed to fan exhaust radon gas to the outside of the home. Energy transmitted from a heat source to the air around it. Radiators actually depend more on convection than radiation. Radiation the phenomenon by which sources generate energy, which propagates away from them in the form of waves.
PhysicsRoentgen is a unit of measurement for the amount of ionizing radiation that produces 2.1 x 10^9 units of charge in 1 cm³ of air at STP. In SI units, 1 Roentgen (R) = 2.58 x 10^-4 C/kg.
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