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How to multiply numbers visually.
Suppose you want to multiply 22 by 13. Draw 2 lines slanted upward to the right, and then move downward to the right a short distance and draw another 2 lines upward to the right. Then draw 1 line slanted downward to the right, and then move upward to the right a short distance and draw another 3 lines slanted downward to the right.
The most important image ever taken (The Hubble telescope)
Watch this video and think twice about the probability of alien life in universe.
The Hubble Deep Field (HDF) is an image of a small region in the constellation Ursa Major, based on the results of a series of observations by the Hubble Space Telescope. It covers an area 2.5 arcminutes across, equivalent in angular size to a tennis ball (about 65mm) at a distance of 100 metres, and a two-millionth of our sky. The image...
True Hermaphroditism
Frequency: Around 500 documented cases in the world. The real frequency in the population is not known.
Cause: Hermaphrodites are chimeras. It is caused by the fusion of two zygotes of differente sex. That is to say, a first spermatozoid would fertilize a ovum and, later, another spermatozoid would fertilize another ovum. The zygotes that would be formed and that were destined to being twins, end up fusing and becoming an only individual that, genetically...
The effect is astounding: a patient starts seeing only bright colors in the surrounding world.
Russian scientists from the city of Novosibirsk, Siberia, made a sensational report at the international conference devoted to new methods of treatment and rehabilitation in narcology. The report was called "Methods of painful impact to treat addictive behavior."
Siberian scientists believe that addiction to alcohol and narcotics, as well as depression, suicidal thoughts and psychos...
Hysteria is a 4,000-year-old diagnosis that has been applied to no mean parade of witches, saints and, of course, Anna O.
But over the last 50 years, the word has been spoken less and less. The disappearance of hysteria has been heralded at least since the 1960's. What had been a Victorian catch-all splintered into many different diagnoses. Hysteria seemed to be a vanished 19th-century extravagance useful for literary analysis but surely out of place in the serious reaches of...
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