অর্থ : A unit of radiation exposure. The dose of ionizing radiation that will produce 1 electrostatic unit of electricity in 1 cc of dry air.
সমার্থক : roentgen
অর্থ : (physics) the universal constant in the gas equation: pressure times volume = R times temperature. Equal to 8.3143 joules per kelvin per mole.
সমার্থক : gas constant, universal gas constant
অর্থ : The 18th letter of the Roman alphabet.
অর্থ : The length of a line segment between the center and circumference of a circle or sphere.
সমার্থক : radius
R meaning in Bengali (Bangla).