User contributions for 86.141.54.174
For 86.141.54.174 talk block log logs filter log
18 November 2007
- 13:0013:00, 18 November 2007 diff hist +300 N Talk:Ronchi test Not diffraction grating
- 12:5812:58, 18 November 2007 diff hist +13 Ronchi test Diffraction grating is not supported by references
- 12:5512:55, 18 November 2007 diff hist +27 Amateur telescope making →Foucault test: Ronchi gratings are not as fine as diffraction gratings
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