AN interesting note on the metre, kilogram, second and ‘another unit’ system of units by Prof. G. Giorgi has been published by the International Electrotechnical Commission (I.E.C.) the central office ...

The redefinition of several physical base units planned for 2018 requires precise knowledge of the values of certain fundamental physical constants. Scientists are working hard to meet the deadlines ...

Americans have long used diverse weights and measures, reflecting their diverse origins. From colonial times, converting from one unit to another was part of courses in commercial arithmetic. The ...