Concepts under ‘quantity’.
| length, l | radius, r | radius of circle A, rA or r(A) |
| wavelength, λ | wavelength of the sodium D radiation, λD or λ(D; Na) | |
| energy, E | kinetic energy, T | kinetic energy of particle i in a given system, Ti |
| heat, Q | heat of vaporization of sample i of water, Qi | |
| electric charge, Q | electric charge of the proton, e | |
| electric resistance, R | electric resistance of resistor i in a given circuit, Ri | |
| amount-of-substance concentration of entity B, cB | amount-of-substance concentration of ethanol in wine sample i, ci(C2H5OH) | |
| number concentration of entity B, CB | number concentration of erythrocytes in blood sample i, C(Erys; Bi) | |
| Rockwell C hardness | Rockwell C hardness of steel sample i, HRCi | |
| length, l | radius, r | radius of circle A, rA or r(A) |
| wavelength, λ | wavelength of the sodium D radiation, λD or λ(D; Na) | |
| energy, E | kinetic energy, T | kinetic energy of particle i in a given system, Ti |
| heat, Q | heat of vaporization of sample i of water, Qi | |
| electric charge, Q | electric charge of the proton, e | |
| electric resistance, R | electric resistance of resistor i in a given circuit, Ri | |
| amount-of-substance concentration of entity B, cB | amount-of-substance concentration of ethanol in wine sample i, ci(C2H5OH) | |
| number concentration of entity B, CB | number concentration of erythrocytes in blood sample i, C(Erys; Bi) | |
| Rockwell C hardness | Rockwell C hardness of steel sample i, HRCi | |