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In image processing, computer graphics, and photography, high dynamic range imaging (HDRI or just HDR) is a set of techniques that allow a greater dynamic range of luminance between the lightest and darkest areas of an image than current standard digital imaging techniques or photographic methods. This wide dynamic range allows HDR images to more accurately represent the range of intensity levels found in real scenes, ranging from direct sunlight to faint starlight...

The piano is a musical instrument played by means of a keyboard. Widely used in Classical music for solo performances, ensemble use, chamber music, and accompaniment, the piano is also very popular as an aid to composing and rehearsal. Although not portable and often expensive, the piano's versatility and ubiquity have made it one of the world's most familiar musical instruments. Pressing a key on the piano's keyboard causes a felt-covered hammer to strike steel strings...

Origamic architecture involves the three-dimensional reproduction of architecture, geometric patterns, everyday objects, or other images, on various scales, using cut-out and folded paper, usually thin paperboard. Visually, these creations are comparable to intricate 'pop-ups', indeed, some works are deliberately engineered to possess 'pop-up'-like properties. However, origamic architecture tends to be cut out of a single sheet of paper, whereas most pop-ups involve two or more...

32 amazing drawings of the 32 nations taking part in the World Cup inspired by African street signage and movie posters. The 2010 FIFA World Cup will be the 19th FIFA World Cup, the premier international football tournament. It is scheduled to take place between 11 June and 11 July 2010 in South Africa. The 2010 FIFA World Cup will be the culmination of a qualification process that began in August 2007 and involved 204 of the 208 FIFA national teams...