An Enquiry Concerning the Principles of Natural Knowledge by Alfred North Whitehead

By Alfred North Whitehead

Alfred North Whitehead (1861-1947) was once a favorite English mathematician and thinker who co-authored the hugely influential Principia Mathematica with Bertrand Russell. initially released in 1919, and primary republished in 1925 as this moment version, An Enquiry in regards to the rules of typical wisdom ranks between Whitehead's most crucial works; forming a viewpoint on medical statement that integrated a posh view of expertise, instead of prioritising the placement of 'pure' feel facts. along better half volumes the idea that of Nature (1920) and the main of Relativity (1922), it created a framework for Whitehead's later metaphysical speculations. this can be a huge booklet that might be of price to someone with an curiosity within the courting among technological know-how and philosophy.

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FJ2(XfJ2 + YfJ2 + ZfJ2 - c2 ) = (xa. 2 - c2) /(1 - V;/a. 1>, - c2) vanish together. This proves Einstein's theorem on the invariance of the veloc1ty c, so far as conceqlS the suffic1ency of the Lorentz1an formulae to produce that result. CHAPTER IV CO~GRLE~CE Il. Simultaneity, II'I Einstein analysed the ideas of time-ord~r and of simultaneity. Primarily (according to his analysis) time-order only refers to the succession of events at' a eiven place. Accordingly each given place has its o\vn time-order.

6. Maxwell's Equations *. 6'1 A discussion of Maxwell's equations would constitute a treatise on electromagnetism. But they exemplify some general considerations on physical laws. ) and cr. Appendix II to thIs chapter. 24 I. THE TRADITIONS OF SCIENCE (U e" Vet' Wet), namely the electric ~nl magnetic' forces and the velocity of the charge of electri~ity. Now a vector involves direction; and direction is not/concemed with what is merely at that point. It is impossible to define direction without reference to the rest of ~ace; namely, it involves some relation to the whole of space.

The two time-systems for reference to a and for reference to {3 respectively are not identical. Let to. ,a-system, and t/l'be the measure of the lapse of time in the {3-system. The distinction between the two time-systems is embodled in the fact that event-particles which happen simultaneously at tIme to. in a-space do not happen simultaneously throughout space {3. ) in a-space and a-time and at (x~,yp~ Z~. ) in {3-space and (3-time, we seek for the formulae which are to replace equations (1) of the Newtonian theory.

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