Julius Heinrich Franz

Julius Heinrich Franz (28 June 1847 – 28 January 1913) was a German astronomer.

Franz was born in Rummelsburg, Prussian Pomerania, he studied at the Universities of Greifswald, Halle and Berlin, after which he was the principal astronomer at the Royal Observatory in Königsberg. In 1882 he was a member of a team sent to the town of Aiken, South Carolina, to observe the transit of Venus. Toward the end of the century he replaced Johann Galle as the director of the observatory at the University of Breslau.[1]

He is most noted for his measurements of features near the lunar limbs. He published a popular book about the Moon in 1906 called Der Mond. In this work Julius named some lunar mares along the limb the Mare Orientale, Mare Autumni and Mare Veris. The later two were later renamed to the Lacus Autumni and Lacus Veris.

Bibliography
  • Die Figur des Mondes, 1899, Königsberg.
  • Der Mond, 1906, Leipzig.
  • Die Randlandschaften des Mondes, 1913, Halle.

Honors
  • The crater Franz on the Moon is named after him.
gollark: If the probability of false positives is low relative to the number of possible keys, it's probably fine™.
gollark: I don't think you can *in general*, but you'll probably know in some cases what the content might be. Lots of network protocols and such include checksums and headers and defined formats, which can be validated, and English text could be detected.
gollark: But having access to several orders of magnitude of computing power than exists on Earth, and quantum computers (which can break the hard problems involved in all widely used asymmetric stuff) would.
gollark: Like how in theory on arbitrarily big numbers the fastest way to do multiplication is with some insane thing involving lots of Fourier transforms, but on averagely sized numbers it isn't very helpful.
gollark: It's entirely possible that the P = NP thing could be entirely irrelevant to breaking encryption, actually, as it might not provide a faster/more computationally efficient algorithm for key sizes which are in use.

References
  1. obituary
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