Albert Einstein Letter Signed with Original Handwritten Equations & Diagrams - $25,000 - (Cherry Hill, NJ)
Albert Einstein's Letter on Earth's Shifting Crust with ORIGINAL HANDWRITTEN Diagram, Equations and Annotations plus Typed Letter Signed "A. Einstein [Princeton]: 1954 TLS signed “A. Einstein,” one page, 8.5 x 11, blindstamped Princeton letterhead, January 16, 1954. Letter to Mr. Charles Hapgood, enclosing a carbon copy of a letter he wrote to Mr. William Farrington, Dept. of Geology and Mineralogy at the University of Massachusetts, on Hapgood's theory of earth crust displacement. In full: "Enclosed I am sending you the copy of a letter I wrote to Mr. W. B. Farrington in Amherst." Includes the two-page carbon copy enclosure, an unsigned typed letter by Einstein which bears several handwritten annotations, including: an original hand-drawn diagram, three original handwritten equations, a term representing tangential force, and five original handwritten angles—three for "beta" and two for "phi," as well as one holograph word, all by Einstein.Einstein's letter to Farrington begins, in part: "When I read your letter…I too had…the impression that I had overestimated erroneously the dislocating force on the solid crust due to an additional (eccentrically located) mass. More careful consideration has shown me, however, that, paradoxically, your argument is not conclusive." Einstein explains: "We imagine the rotating earth with 'frozen' crust. The surface of the crust is then (with reference to the rotating earth) and equipotential surface. If one places excentrically a 'small' sphere of the mass m on this surface…then this sphere is in equilibrium." He draws a diagram to the left, and continues: "One feels therefore induced to believe that for this reason no angular momentum could be produced on the crust by this sphere. Such conclusion would be, however, invalid as shown by the following consideration." He goes on to illustrate his point using mathematical equations, and concludes: "I think that the idea of Mr. Hapgood has to be taken quite seriously." In …
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