History of sugar sugar" (Traditional Chinese: 砂糖) for what the West knows as "table sugar". In the year 1792, sugar rose by degrees to an enormous price in Great Britain. The East India Company was then called upon to lend their assistance to help in the lowering of the price of sugar. On 15 March 1792, his Majesty's Ministers to the British Parliament, presented a report related to the production of refined sugar in British India. Lieutenant J. Paterson, of the Bengal establishment, reported that refined sugar could be produced in India with many superior advantages, and a lot more cheaply than in
Proper time arc length of world lines in four-dimensional spacetime. From the mathematical point of view, coordinate time is assumed to be predefined and we require an expression for proper time as a function of coordinate time. From the experimental point of view, proper time is what is measured experimentally and then coordinate time is calculated from the proper time of some inertial clocks. Proper time can only be defined for timelike paths through spacetime which allow for the construction of an accompanying set of physical rulers and clocks. The same formalism for spacelike paths leads to a measurement of proper distance