4 ms·
It's almost certainly all about the pattern. I make telescope mirrors. The error I'm allowed is 100 nm. I would love to just drag my fingers over the glass and
by Florin_Andrei 13y ago
It's almost certainly all about the pattern.
I make telescope mirrors. The error I'm allowed is 100 nm. I would love to just drag my fingers over the glass and tell if something is not quite right with the optical surface. In reality, I need a pretty elaborate optical setup to amplify the errors about 1/2 million times, in order to see them.
I'm guessing the spatial frequency of the pattern in that experiment is on the same size scale like the vertical amplitude of it.
- taavi013 13y agoIt is rumoured that Bernhard Schmidt had so sensitive touch, that he could physically feel polishing results by his (only) left hand. http://en.wikipedia.org/wiki/Bernhard_Schmidt#Mittweida_years http://en.wikipedia.org/wiki/Bernhard_Schmidt#Mittweida_year...
- Florin_Andrei 13y agoIf this is about the early stages of polishing, I believe it (and I can do it myself).