Postcard sent from Walther Gerlach to Niels Bohr on February 8 1922 shows a photograph of the beam splitting. The message reads: "“....the experimental proof of directional quantisation. We congratulate you on the confirmation of your ”

---

Size: 1869px × 1255px
Photo credit: © The Syndicate / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: 8, 1922, beam, bohr, confirmation, congratulate, directional, experimental, february, gerlach, message, niels, photograph, postcard, proof, quantisation., reads:, shows, splitting., ”, walther, “....