TODAY IN THE HISTORY OF PSYCHOLOGY
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19 agosto 2016
Perseid Fireball at Sunset Crater
On the night of August 12, this bright Perseid meteor flashed above volcanic Sunset Crater National Monument, Arizona, USA, planet Earth. Streaking along the summer Milky Way, its initial color is likely due to the shower meteor's characteristically high speed. Entering at 60 kilometers per second, Perseid meteors are capable of exciting green emission from oxygen atoms while passing through the tenuous atmosphere at high altitudes. Also characteristic of bright meteors, this Perseid left a visibly glowing persistent train. Its evolution is seen over a three minute sequence (left to right) spanning the bottom of the frame. The camera ultimately captured a dramatic timelapse video of the twisting, drifting train.
from NASA http://ift.tt/2byQIpz
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This island nation is the subject of my latest facts list. Once...
This island nation is the subject of my latest facts list. Once a British protectorate, it remains Protestant and majority Polynesian, with a smattering of Micronesian. What country is it?
Full independence was approved by citizens of Gambia in a 1970 referendum. On April 24th of that...
Full independence was approved by citizens of Gambia in a 1970 referendum. On April 24th of that year, Gambia proclaimed itself a republic. Since that date, the country has had two political leaders in forty-six years. Technically both held the title “president.” But really, why even bother? No one is fooled.
Fuselage of NASA's Future X-57 Maxwell All-Electric Aircraft
As NASA celebrates National Aviation Day, the agency's innovators are working to transform air transportation to meet the future needs of the global aviation community. The agency is embarking on a 10-year plan, New Aviation Horizons, that will see NASA field a number of experimental aircraft to demonstrate 21st century ideas for flight.
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The Confederacy Started With A Major Disadvantage
Besides the fact that the Federal government had an in-place military, and in-place military suppliers, while the Confederacy had to start from scratch, and the population difference which favored the North, there was also the economic disparity. The last economic figures before the American Civil War showed that the Southern states had 18,026 “industrial establishments” which could be converted to making necessities during a war, from bullets to shoes. The Northern states had 110,274.
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