Visit –> http://ift.tt/2wCVpbI to read ‘What is Hypnosis?’ A classic article originally published in the Journal of Abnormal Psychology in 1906.
07 agosto 2017
Density Waves in Saturns Rings from Cassini
What causes the patterns in Saturn's rings? The Cassini spacecraft, soon ending its 13 years orbiting Saturn, has sent back another spectacular image of Saturn's immense ring system in unprecedented detail. The physical cause for some of Saturn's ring structures is not always understood. The cause for the beautifully geometric type of ring structure shown here in ring of Saturn, however, is surely a density wave. A small moon systematically perturbing the orbits of ring particles circling Saturn at slightly different distances causes such a density wave bunching. Also visible on the lower right of the image is a bending wave, a vertical wave in ring particles also caused by the gravity of a nearby moon. Cassini's final orbits are allowing a series of novel scientific measurements and images of the Solar System's most grand ring system.
from NASA http://ift.tt/2vaJh3H
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The first effective rockets for military use were developed in...
The first effective rockets for military use were developed in Mysore, India. The ruler of Mysore, Hyder Ali, and his son Tipu Sultan deployed them effectively against the larger British East India Company forces during the Anglo-Mysore Wars in the 1700s. These ‘missiles’, were fitted with swords so that after traveling some distance they would come down with the sword’s edge facing the enemy. The rockets’ range varied from several meters up to 2 kilometers!
Widespread Loneliness Is Killing People And We Need to Start Taking This Seriously
Widespread Loneliness Is Killing People And We Need to Start Taking This Seriously:
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Researchers are warning that loneliness and social isolation is becoming a greater public health threat than the widely discussed problem of obesity.
More and more people in the US are living alone, with declining marriage rates and fewer children - and psychologists are warning that the spread of loneliness is increasing our risk of premature death.
“Being connected to others socially is widely considered a fundamental human need - crucial to both well-being and survival,” says psychologist Julianne Holt-Lunstad from Brigham Young University.
jumpingjacktrash: historical-nonfiction: from the “Tomba dei...
from the “Tomba dei Leopardi,” in Tarquinia, Italy, these colorful frescos are an excellent example of how the Etruscans were influenced by Greek art. Circa 400s BCE.
this is a fascinating cross between greek and egyptian.
Sorry, but to clear up any confusion: the Etruscans art was mainly influenced by ancient Greek styles. We know there was some influence of ancient Egyptian art. More influence of ancient Greek art. But Etruscans developed their own art style, separately and distinctly from any other Mediterranean culture.
Their art cannot be summed up as a mishmash of two other cultures’ art. It was its own thing.
from the “Tomba dei Leopardi,” in Tarquinia, Italy, these...
from the “Tomba dei Leopardi,” in Tarquinia, Italy, these colorful frescos are an excellent example of how the Etruscans were influenced by Greek art. Circa 400s BCE.
Prometheus and the Ghostly F Ring
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