File:L12 31March2009png.png
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current | 16:02, 11 June 2015 | ![]() | 1,253 × 612 (46 KB) | GuentherWuchterl (Talk | contribs) | |
23:59, 5 April 2009 | Error creating thumbnail: File seems to be missing: | 1,253 × 612 (46 KB) | GuentherWuchterl (Talk | contribs) | Measurements of Lightmeter L12 at Tautenburg. A very clear night with the half-moon shining before midnight and the illumination decreasing to 0.001 Lux later. Note the non-linear, daylight part of the lightmeter, that operates above the horizontal line i |
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