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UFO

29 Feb 2012 02:48



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si grosimea foliei nu este de 0.1 mm ?

The Baader Solar filter reduces the intensity of incident sunlight by a factor of 100,000 times. The Baader film base is only 0.012mm thick and is coated on both sides.

de aici http://www.widescreen-centre.co.uk/Products/BAADER_Astro_Solar_Filter_.html