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Adolf Hitler (Nazi, nazism, German leader).
9 Things You Might Not Know About Adolf Hitler
Two chicks near an egg with a white background (poultry, chick, chickens, birds).
What Do Eggs Have to Do with Easter?
Still from the film Deliverance, 1919. The story of Helen Keller and Anne Sullivan. View shows Keller in the cockpit/front seat of an airplane.
How Did Helen Keller Fly a Plane?
Solar eclipse of the sun.
The Sun Was Eaten: 6 Ways Cultures Have Explained Eclipses
Pluto. The Changing Faces of Pluto. Most detailed view to date of the entire surface of the dwarf planet Pluto, as constructed from multiple NASA Hubble Space Telescope photographs taken from 2002 to 2003.
10 Important Dates in Pluto History
Coffee beans after roasting.
How Is Coffee Decaffeinated?
Artist interpretation of a Space meteoroid impact. Meteor impact. Asteroid, End of the world, danger, destruction, dinosaur extinct, Judgement Day, Planet Earth, Doomsday Predictions, comet
10 Failed Doomsday Predictions
DVD Article

DVD summary

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Below is the article summary. For the full article, see DVD.

DVD, in full digital video disc or digital versatile disc, Type of optical disc. The DVD represents the second generation of compact-disc (CD) technology. Like a CD drive, a DVD drive uses a low-power laser to read digitized (binary) data that have been encoded onto the disc in the form of tiny pits. Because it uses a digital format, a DVD can store any kind of data, including movies, music, text, and graphical images. DVDs are available in single- and double-sided versions, with one or two layers of information per side. Single-sided DVDs have become standard media for recorded motion pictures, largely replacing videotape in the home market. A double-sided, dual-layer version can store about 30 times as much information as a standard CD. DVDs are made in a ROM (read-only memory) format as well as in erasable (DVD-E) and recordable (DVD-R) formats. Though DVD players can usually read CDs, CD players cannot read DVDs. It is expected that DVDs will eventually replace CDs, especially for multimedia workstations.