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	* 1922/2007 - "[[The Principle of Relativity]]" ([http://www.amazon.com/Principle-Relativity-Alfred-North-Whitehead/dp/1602062188/ref=pd_sim_b_1 Read in full])		* 1922/2007 - "[[The Principle of Relativity]]" ([http://www.amazon.com/Principle-Relativity-Alfred-North-Whitehead/dp/1602062188/ref=pd_sim_b_1 Read in full])

	[[Category:Scientist]]		[[Category:Scientist\|Whitehead Alfred]]

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{{Infobox scientist
| name = Alfred North Whitehead
| image = Alfred North Whitehead 1216.jpg
| alt = Alfred North Whitehead
| birth_date = {{birth date|1861|02|15|mf=y}}
| death_date = {{birth date|1947|12|30|mf=y}}
| fields = [[Professor of Mathematics]], [[Philosopher]]
| residence = Cambridge, MA, United States
| nationality = English / USA
| known_for = [[Gravity]], [[General Relativity]], [[Philosophy of Science]]
}}

Alfred North Whitehead was an English mathematician who became a philosopher. He wrote on algebra, logic, foundations of mathematics, philosophy of science, physics, metaphysics, and education. He co-authored the epochal ''[http://en.wikipedia.org/wiki/Principia_Mathematica Principia Mathematica]'' with [http://en.wikipedia.org/wiki/Bertrand_Russell Bertrand Russell]...

The period between 1910 and 1924 was mostly spent at University College London and Imperial College London, where he taught and wrote on physics, the philosophy of science, and the theory and practice of education. He was a Fellow of the Royal Society since 1903 and was elected to the British Academy in 1931. In physics, Whitehead articulated a rival doctrine to Einstein's [http://en.wikipedia.org/wiki/General_relativity general relativity]. [http://en.wikipedia.org/wiki/Whitehead%27s_theory_of_gravitation His theory of gravitation] is now discredited because its predicted variability of the gravitational constant G disagrees with experimental findings.

Whitehead's theory of gravitation is said to feature a ''prior geometry''. It has the curious feature that electromagnetic waves propagate along null geodesics of the physical spacetime (as defined by the metric determined from geometrical measurements and timing experiments), while gravitational waves propagate along null geodesics of a ''flat background'' represented by the metric tensor of Minkowski spacetime.

Whitehead's theory makes the same predictions as general relativity regarding the [http://en.wikipedia.org/wiki/Category:Tests_of_general_relativity four classical solar system tests] ([http://en.wikipedia.org/wiki/Gravitational_red_shift gravitational red shift], light bending, [http://en.wikipedia.org/wiki/Perihelion perihelion] shift, [http://en.wikipedia.org/wiki/Shapiro_delay Shapiro time delay]), and was regarded as a viable competitor of general relativity for several decades. [http://en.wikipedia.org/wiki/Clifford_Martin_Will Clifford M. Will] claims that the theory makes predictions concerning ordinary ocean tides on Earth which are in violent disagreement with observation, which immediately nullified this theory.

In 1989, a new interpretation of Whitehead's theory was proposed that accorded with those observed tidal effects. However, the new interpretation did not satisfy another observed effect, called the "[http://en.wikipedia.org/wiki/Nordtvedt_Effect Nordtvedt Effect]." - Wikipedia

'''Books:'''

* 1922. The Principle of Relativity with Applications to Physical Science. Cambridge Uni. Press.
* 1925 (1910-13), with [http://en.wikipedia.org/wiki/Bertrand_Russell Bertrand Russell]. [http://en.wikipedia.org/wiki/Principia_Mathematica Principia Mathematica], in 3 vols. Cambridge Uni. Press. Vol. 1 to *56 is available as a CUP paperback.
* 1925a. Science and the Modern World. 1997 paperback, Free Press (Simon & Schuster), [http://en.wikipedia.org/wiki/Special:BookSources/0684836394 ISBN 0-684-83639-4]. [http://en.wikipedia.org/wiki/Great_Books_of_the_Western_World#Volume_55 Vol. 55 of the Great Books of the Western World series].
* 1925b (1919). An Enquiry Concerning the Principles of Natural Knowledge. Cambridge Uni. Press.
* 1926. Religion in the Making. 1974, New American Library. 1996, with introduction by Judith A. Jones, Fordham Univ. Press.
* 1927. Symbolism, Its Meaning and Effect. The 1927 Barbour-Page Lectures, given at the University of Virginia. 1985 paperback, Fordham University Press.
* 1929. [http://en.wikipedia.org/wiki/Process_and_Reality Process and Reality]: An Essay in Cosmology. 1979 corrected edition, edited by David Ray Griffin and Donald W. Sherburne, Free Press. ([http://www.forizslaszlo.com/filozofia/folyamat_es_valosag/Whitehead_PR_Part5_Final_Interpratation.pdf Part V. Final Interpretation])

==Books==

* 1922/2007 - "[[The Principle of Relativity]]" ([http://www.amazon.com/Principle-Relativity-Alfred-North-Whitehead/dp/1602062188/ref=pd_sim_b_1 Read in full])

[[Category:Scientist]]

Alfred North Whitehead - Revision history

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