The formula for Relative Density RD is. R m v. Check out our guide to volume and weight and our volume calculator if youre not yet confident with it.
The basic formula for RD or SG is.
The relative density is measured as follows. Theoretical Density actual density fresh unit weight theoretical x 100 calculated air content Since the theoretical density from the lab has no air you are comparing that laboratory weight to the fresh weight which contains air. Relative density we can also call specific density. The process of emission and absorption depends on the wavelength of the radiations which includes the interaction between fundamental particles like electrons atoms ions etc.