Talk:Joseph Johann von Littrow
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who is the Littrow prism named for? edit
Trying to make one more link. --AJim (talk) 19:52, 11 March 2015 (UTC)
Life edit
The Article Heinrich von Littrow claims that J.J. was married to one "Karoline von Ulrichsthal" and had at least 13 sons with her. If there's a decent source for that info it should be added to the article. --BjKa (talk) 09:40, 4 September 2015 (UTC)
Moon Crater edit
I don't dispute the naming of the moon crater after him, but the claim needs a citation. Maybe some NASA website has some info on the naming of moon features? --BjKa (talk) 09:40, 4 September 2015 (UTC)
Diffraction gratings edit
Diffraction gratings can be set up in the Littrow configuration, as described in the article on blazed gratings and in the Diffraction Grating Handbook by Christopher Palmer published by Newport Corporation. Is the Littrow configuration named after Joseph Johann von Littrow?
- Apparently, yes—according to pg 298 of Hans Zappe's text on The Fundamentals of Micro-Optics. (Unfortunately, the particular page does not appear to be available in Google Books' on-line preview.) I've updated the article with this statement, and reference, and put a link to this article into the page on blazed gratings. Supasheep (talk) 22:21, 13 February 2018 (UTC)
- The spectrograph was invented by de:Otto von Littrow, J.J.'s grandson, see [1]. J.J. could hardly have been interested in spectroscopy as spectra only became interesting for astronomy after Kirchhoff's and Bunsen's work in 1859. --Wrongfilter (talk) 20:15, 22 March 2021 (UTC)
- Apparently, yes—according to pg 298 of Hans Zappe's text on The Fundamentals of Micro-Optics. (Unfortunately, the particular page does not appear to be available in Google Books' on-line preview.) I've updated the article with this statement, and reference, and put a link to this article into the page on blazed gratings. Supasheep (talk) 22:21, 13 February 2018 (UTC)
Pronunciation edit
How is Littrow pronounced?
- At least among English speakers here in Canada: 'Li', as in Lithium, and 'trow', as in retro. I don't have any real 'source' for this, unfortunately. Supasheep (talk) 22:23, 13 February 2018 (UTC)
- Bit late, but it is Littroff, actually — that's how we pronounce his name in Vienna, and this reference states that he actually changed his name from Lyttroff to Littrow after 1807. Incidentally, the pronunciation of -ow as just "-oh" is common in northern/northeastern Germany (Prussia). --Wrongfilter (talk) 20:43, 22 March 2021 (UTC)
- At least among English speakers here in Canada: 'Li', as in Lithium, and 'trow', as in retro. I don't have any real 'source' for this, unfortunately. Supasheep (talk) 22:23, 13 February 2018 (UTC)