interesting sites, funny,rare
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About this photo This image was created from 3,000 individual photos stitched together into a single image that is 280,000 x 140,000 pixels. That's around 40 gigapixels, or 40,000 megapixels.
World's Largest indoor Photo: Strahov Philosophical Library, Prague - 40 Gigapixel 360º Panorama
Wolfram|Alpha: Computational Knowledge Engine
it shows the sources ,you can verify by Jul 19
tres utile pour lesz ingenieurs et a tt ceux qui s'interessent au sciences exactes et au calcule by Jul 18