30 março 2015

Via: http://ift.tt/19V5cyI ‘On This Day in...





Via: http://ift.tt/19V5cyIOn This Day in Psychology: A Showcase of Great Pioneers and Defining Moments.’


Documenting a significant person, event or landmark in the history of psychology every day of the year, you’ll find this book a thoroughly engaging read whatever your connection with psychology - student, educator, professional or general interest.


VISIT —> http://ift.tt/1eWNk1f For free psychology information & resources.


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A Flag Shaped Aurora over Sweden



It appeared, momentarily, like a 50-km tall banded flag. In mid-March, an energetic Coronal Mass Ejection directed toward a clear magnetic channel to Earth led to one of the more intense geomagnetic storms of recent years. A visual result was wide spread auroras being seen over many countries near Earth's magnetic poles. Captured over Kiruna, Sweden, the image features an unusually straight auroral curtain with the green color emitted low in the Earth's atmosphere, and red many kilometers higher up. It is unclear where the rare purple aurora originates, but it might involve an unusual blue aurora at an even lower altitude than the green, seen superposed with a much higher red. As the Sun continues near its top level of surface activity, colorful nights of auroras over Earth are likely to continue.



from NASA http://ift.tt/1Db5Svb

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Mythology Meme: (1/8) Mortals ➝ Medea In Euripides’s play...










Mythology Meme: (1/8) Mortals ➝ Medea


In Euripides’s play Medea, Jason leaves Medea when Creon, king of Corinth, offers him his daughter, Glauce. The play tells of Medea avenging her husband’s betrayal by slaying their children.



mythos
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Source for more facts follow NowYouKno





Source for more facts follow NowYouKno


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Source for more facts follow NowYouKno





Source for more facts follow NowYouKno


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Source for more facts follow NowYouKno





Source for more facts follow NowYouKno


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There are reliable sources that state that Mongolian archers...





There are reliable sources that state that Mongolian archers could routinely hit targets over 500 meters away. To put that in perspective, the gun that the United States Army uses today has a maximum deadly range of about 600 meters, with a reliable kill range of about half that. Meaning technically, at distances over 250 meters, a Mongolian archer would pose more of a threat to you than a US Marine.


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Can Squirrels Fly?

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Source for more facts follow NowYouKno





Source for more facts follow NowYouKno


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What is Public Health? (From Public Health Wessex Training...





What is Public Health?


(From Public Health Wessex Training Group, UK)


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Hubble Views a Galaxy on Edge



This NASA/ESA Hubble Space Telescope image shows an edge-on view of the spiral galaxy NGC 5023. Due to its orientation we cannot appreciate its spiral arms, but we can admire the elegant profile of its disk. The galaxy lies over 30 million light-years away from us. NGC 5023 is part of the M51 group of galaxies. The brightest galaxy in this group is Messier 51, the Whirlpool Galaxy, which has been captured by Hubble many times. NGC 5023 is less fond of the limelight and seems rather unsociable in comparison — it is relatively isolated from the other galaxies in the group. Astronomers are particularly interested in the vertical structure of disks like these. By analyzing the structure above and below the central plane of the galaxy they can make progress in understanding galaxy evolution. Astronomers are able to analyze the distribution of different types of stars within the galaxy and their properties, in particular how well evolved they are on the Hertzsprung–Russell Diagram — a scatter graph of stars that shows their evolution. NGC 5023 is one of six edge-on spiral galaxies observed as part of a study using Hubble’s Advanced Camera for Surveys. They study this vertical distribution and find a trend which suggests that heating of the disc plays an important role in producing the stars seen away from the plane of the galaxy. In fact, NGC 5023 is pretty popular when it comes to astronomers, despite its unsociable behavior. The galaxy is also one of 14 disk galaxies that are part of the GHOSTS survey — a survey which uses Hubble data to study galaxy halos, outer disks and star clusters. It is the largest study to date of star populations in the outskirts of disk galaxies. The incredible sharp sight of Hubble has allowed scientist to count more than 30,000 individual bright stars in this image. This is only a small fraction of the several billion stars that this galaxy contains, but the others are too faint to detect individually even with Hubble. European Space Agency Credit: ESA/NASA



from NASA http://ift.tt/1aaWXyO

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In 1980, the United Nations imposed a cultural boycott on South Africa in condemnation of apartheid....

In 1980, the United Nations imposed a cultural boycott on South Africa in condemnation of apartheid. Queen flouted the boycott and were blacklisted by the UN. Other artists that ignored the boycott include The Beach Boys, Frank Sinatra and Elton John.


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Why Public Health? After working to establish a community...





Why Public Health?


After working to establish a community health center in an underserved area of North Philadelphia, Jennifer Atlas, SM ‘14, went to Harvard School of Public Health to study health policy and management. Upon graduation, she accepted a job doing strategy and business development work at Children’s National Medical Center in Washington D.C.


(From Harvard School of Public Health)


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