The Craftmans Shop > New from Old
Tidying Up An Analoy 1401 Alloy Analyser
PekkaNF:
Nice. Few hundred nm spread over one inch does not sound overly demanding on optics. Wonder if something like that would be possible to make modern off the self componenets. In 80:s that would have been very hard. I remember when fast line scan cameras started appearing on factory floor.
vtsteam:
I made one of these spectroscopes almost 20 years ago, though with a piece of 2" ABS tubing, a couple razor blades for a slit, and a CD. The DVD in the article should be a much finer grating.
vtsteam:
This one (at the bottom) is more like the one I made:
http://www.inpharmix.com/jps/CD_spectro.html
PekkaNF:
Thank you Steve. That was really interesting and informative...I did not realize that CD can ge used as a difraction grating, alhough I have been looking at it and seen the difracted light when light hits that at angle. I have to show that to my daugher.
Sea.dog:
A very interesting article. In the 60s a science/radio club that I was in undertook a project for a science fair. It was to be a scanning spectrometer. I had the task of making the slit, which I did, and it was fabricated from thin brass sheet cut into strip and rivetted together. The slit was to be adjustable. I wish I'd had more imagination back then. I could have saved myself an awful lot of time and trouble by using razor blades :doh:
Sadly we never completed the project.
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version