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Socrates gently berates the rhapsode for being Protean, which after all, is exactly what a rhapsode is: a man who is convincingly capable of being different people on stage. Through his character Socrates, Plato argues that "Ion’s talent as an interpreter cannot be an art, a definable body of knowledge or an ordered system of skills," but ...
In antiquity, systems of measurement were defined locally: the different units might be defined independently according to the length of a king's thumb or the size of his foot, the length of stride, the length of arm, or maybe the weight of water in a keg of specific size, perhaps itself defined in hands and knuckles. The unifying ...
The imperial system of measure does not have an equivalent to the US customary system of "dry measure". In the international commodities markets, the barrel ( 42 US gallons , ≈159 litres) is used in both London and New York/Chicago for trading in crude oil and the troy ounce (≈31.10 grams) for trading in precious metals, except the London ...
The International System of Units, internationally known by the abbreviation SI (from French Système international d'unités), is the modern form of the metric system and the world's most widely used system of measurement. It is the only system of measurement with official status in nearly every country in the world, employed in science ...
"The metric system is for all people for all time." (Condorcet 1791) Four objects used in making measurements in everyday situations that have metric calibrations are shown: a tape measure calibrated in centimetres, a thermometer calibrated in degrees Celsius, a kilogram mass, and an electrical multimeter which measures volts, amps and ohms.
Ancient Greek units of measurement varied according to location and epoch. Systems of ancient weights and measures evolved as needs changed; Solon and other lawgivers also reformed them en bloc . [ citation needed ] Some units of measurement were found to be convenient for trade within the Mediterranean region and these units became ...
A main idea developed in the Philebus is the extraordinary importance of measure. For Plato's Socrates, proportion, or equal measure plays a central role both in the order of the world and in human life as the basis of all that is good and beautiful. This is contrasted with the immoderation of hedonistic excess.
Socrates considers his philosophical work as midwifery . This method, later also called Socratic method, consists in eliciting knowledge by a series of questions and answers. Protagoras, shown at the right with Democritus, was famous for the quote "Man is the measure of all things" and argued that knowledge was obtained from the senses.