-------- ed breya writes: > The nicest optical bench I've ever seen in person, was in one of our > labs many years ago. It was a huge, precisely flat polished granite slab > about 6-8" thick, about 4x8' or maybe 5x10', mounted on active-leveling > pneumatic bladders. It was loaded with thousands of threaded inserts, > uniformly spaced on a grid, for mounting optical devices and equipment.
It is worth foot-noting here, that at that level of quality they are usually not made from natural granite, but rather from "epoxy-granite", which can be designed to have very low temp-co. > There are lower-grade type platforms available, commonly called "optical > breadboards," that are made from thick sheets of aluminum or stainless > steel, [...] and these obviously have a sizeable temp-co, so the money you saved on your bench you get to spend on your air-con. They are a lot easier to move around though. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 p...@freebsd.org | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence. _______________________________________________ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
