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Help to Identify CZJ instrument.
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PostPosted: Sun Jun 25, 2017 8:24 pm    Post subject: Help to Identify CZJ instrument. Reply with quote
I was perusing my favorite science site, ars technica, and they were requesting help identifying some museum items in the US National Institute of standards and Technology (NIST) . One is a boxed set containing a boxeed optical instrument labelled as Carl Zeiss Jena. Thought some of my friends on here could help.


PostPosted: Sun Jun 25, 2017 9:30 pm    Post subject: Re: Help to Identify CZJ instrument. Reply with quote
jamaeolus wrote:
I was perusing my favorite science site, ars technica, and they were requesting help identifying some museum items in the US National Institute of standards and Technology (NIST) . One is a boxed set containing a boxeed optical instrument labelled as Carl Zeiss Jena. Thought some of my friends on here could help.



Oh THAT instrument, of course!!! Twisted Evil

Link / picture(s) would help... Wink


PostPosted: Sun Jun 25, 2017 10:56 pm    Post subject: Reply with quote
I'll see what I can do (I'm on a tablet and cut/paste is difficult ) but ars has a really good site. Google ars. Click "science" on the directory bar. Likely now will be 2nd or third aticle.. it's about NIST.

https://arstechnica.com/science/2017/06/a-pigeon-piloted-bomb-odd-powders-and-cryptic-science-ars-goes-to-nist/

It's about halfway thru the photo lineup.


PostPosted: Mon Jun 26, 2017 3:43 am    Post subject: Reply with quote
This one?



caption: "An unknown optical instrument and wood case manufactured by the firm Carl Zeiss of Jena, Germany. The instrument is black and circular and rests on a tripod. There are optics included in the case. "


PostPosted: Mon Jun 26, 2017 4:57 am    Post subject: Reply with quote
Yes apparently the Zeiss gadget is apparently a Pulfrich Interference Stage, for measuring the refractive index of a liquid.


PostPosted: Mon Jun 26, 2017 8:16 pm    Post subject: Reply with quote
Let us know how ars responds, please? Smile


PostPosted: Tue Jun 27, 2017 8:01 am    Post subject: Reply with quote
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