DICTIONARY OF SCIENTIFIC QUANTITIES - Volume I

Since the appearance of humanities on earth, and since human beings started to have activities, the need for measuring units appeared. Measuring weight, distance (length) and time were the first tasks to be measured. This is why weights and measures were among the earliest tools invented by man. Primitive societies needed rudimentary measures for many tasks: constructing dwellings of an appropriate size and shape, fashioning clothing, or bartering food or raw materials. Man, understandably,...