RELATIVITY • FREE TRANSLATOR.ORG • Definition of Relativity

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/rˌɛlətˈɪvəti/ Listen

noun

relativity n.

1.

The state of being relative; as, the relativity of a subject.

2.

One of two theories (also called theory of relativity) proposed by Albert Einstein, the special theory of relativity, or the general theory of relativity. The special theory of relativity or special relativity is based on the proposition that the speed of light is a constant no matter how observed, and is independent of the motion of the observer. From this follows several principles, such as the increase of mass with velocity (which has been confirmed: see relativistic mass equation) and the impossibility of acceleration to a speed greater than that of light; the equivalence of mass and energy, expressed by the famous equation E = mc^(2); and time dilation, which is the apparent slowing of a clock in a system, as observed by an observer in a system moving relative to the clock. The general theory of relativity is based on the proposition that there is no physical difference between gravitational force and the force produced by acceleration. From this follow several results, of which the bending of light rays in a gravitational field and the equivalence of the inertial and gravitational masses have been verified. The possible existence of black holes (believed by many astronomers to have been adequately proven) is another consequence of the theory.

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Etymology of 'Relativity'

Collaborative International Dictionary of English 0.48

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"Relativity" Quotes from Famous Books

... philosophy in the powers of the individual mind. Whether it is dogmatic or critical, whether it admits the relativity of our knowledge or claims to be established within the absolute, a philosophy is generally the work of a philosopher, a single and unitary vision of the whole. It is ...

— Creative Evolution • Henri Bergson

... purchasing power. Since the armistice prices have moved upwards and downwards with unprecedented violence; and it would be very rash to prophesy the precise level at which they will ultimately settle (using that word with considerable relativity). But, for reasons for which the reader is referred to Volume II in this series, it is safe enough to say that the general level of post-war will greatly exceed that of pre-war prices. Now this will apply not only to consumers' goods like milk ...

— Supply and Demand • Hubert D. Henderson

... early part of his Lectures has yet been produced. Of living thinkers we do not speak; but the same great truth formed the groundwork of all the speculative philosophy of Bentham, and pre-eminently of James Mill: and Sir William Hamilton's famous doctrine of the Relativity of human knowledge has guided many to it, though we cannot credit Sir William Hamilton himself with having understood the principle, or been willing to assent to it if ...

— Auguste Comte and Positivism • John-Stuart Mill

... read it, he recovered. I sent back next morning from London a telegram of enquiry (I did it in reality so as to have a proper proof of his death) and received the answer, "Patient doing well; is sitting up in bed and reading Lord Haldane's Relativity; ...

— My Discovery of England • Stephen Leacock

... outlook upon a dynamic, mobile, progressive world. Hardly a better description could be given of the intellectual advance which has marked the last century than that which Renan wrote years ago: "the substitution of the category of becoming for being, of the conception of relativity for that of the absolute, of movement for immobility." [1] Underneath all other problems which the Christian Gospel faces is the task of choosing what her attitude shall be toward this new and ...

— Christianity and Progress • Harry Emerson Fosdick

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