BIB_ID
292037
Accession number
MA 4725.2
Creator
Einstein, Albert, 1879-1955.
Display Date
1911 Sept. 21.
Credit line
Gift of Mr. Horace Wood Brock, Mr. John Biddle Brock, and Ms. Hope Brock Winthrop, in loving memory of their parents, Horace Brock (1918-1981) and Hope Distler Brock (1908-1988), 1991.
Description
1 item (2 p.) ; 13.9 cm
Notes
Part of a collection of 25 letters from Albert Einstein to the German astronomer Erwin Finlay Freundlich. Letters are described individually in 25 catalog records (MA 4725.1-25).
With Austrian stamp and postmarked Smichov. Addressed to "Dr. E. F. Freundlich / Kgl. Sternwarte Berlin S.W.48. / Enckeplatz 3a / Berlin." Signed A. Einstein.
With Austrian stamp and postmarked Smichov. Addressed to "Dr. E. F. Freundlich / Kgl. Sternwarte Berlin S.W.48. / Enckeplatz 3a / Berlin." Signed A. Einstein.
Provenance
Mr. Horace Wood Brock, Mr. John Biddle Brock, and Ms. Hope Brock Winthrop.
Summary
Giving a formula and discussing it. Noting that the system of units is irrelevant in the formula if it is measured in the same system. Wondering whether it possible to watch stars during bright daytime (without a solar eclipse) using available instruments, and mentioning that if this can be achieved, Freundlich could easily discern if the above theory is correct. Stating that Einstein does not see the use of spectral segmentation here (in Smichov?) and is curious to hear Freundlich's response.
Catalog link
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