4020

William Henry Bragg Typed Letter Signed on a High Speed Electron Problem (January 25, 1919)

Currency:USD Category:Collectibles / Autographs Start Price:NA Estimated At:400.00 - 600.00 USD
William Henry Bragg Typed Letter Signed on a High Speed Electron Problem (January 25, 1919)

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Auction Date:2021 May 20 @ 18:00 (UTC-05:00 : EST/CDT)
Location:15th Floor WeWork, Boston, Massachusetts, 02108, United States
ALS - Autograph Letter Signed
ANS - Autograph Note Signed
AQS - Autograph Quotation Signed
AMQS - Autograph Musical Quotation Signed
DS - Document Signed
FDC - First Day Cover
Inscribed - “Personalized”
ISP - Inscribed Signed Photograph
LS - Letter Signed
SP - Signed Photograph
TLS - Typed Letter Signed
TLS signed “W. H. Bragg,” one page, 5 x 7, University of London letterhead, January 25, 1919. Letter to Dr. Ludwik Silberstein, in full: "I am puzzling over a point which involved the momentum and energy of a high speed electron. I wonder if you would be so good as to give me the benefit of your advice? Could I meet you anywhere on Monday? It would be very nice if you would come and have a cup of tea here about 4 o'clock, or later if it suits you better." Silberstein notes the dates of receipt and reply on the reverse. In fine condition.