01 março 2017

A Solar Eclipse with a Beaded Ring of Fire


What kind of eclipse is this? On Sunday, visible in parts of Earth's southern hemisphere, the Moon blocked part of the Sun during a partial solar eclipse. In some locations, though, the effect was a rare type of partial eclipse called an annular eclipse. There, since the Moon is too far from the Earth to block the entire Sun, sunlight streamed around the edges of the Moon creating a "ring of fire". At some times, though, the effect was a rare type of annular eclipse. Then, an edge of the Moon nearly aligned with an edge of the Sun, allowing sunlight to stream through only low areas on the Moon. Called a "Baily's bead" or a "diamond ring", this doubly rare effect was captured Sunday in the feature photograph from Chubut, Argentina, in South America. This summer a total solar eclipse will swoop across North America.

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The Gambia: a general geographic and political and social and...



The Gambia: a general geographic and political and social and diplomatic overview of one of Africa’s smallest countries

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Dentist William T.G. Morton was the first to use sulfuric...



Dentist William T.G. Morton was the first to use sulfuric ether as an anesthetic, but he’d learned about this property at the chemistry lectures of Charles T. Jackson. Which of them deserved a monument? Oliver Wendell Holmes suggested setting up statues of both men on the same pedestal, with the inscription: To E(i)ther

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Full-Circle Vista With a Linear Shaped Martian Sand Dune


The left side of this 360-degree panorama from NASA's Curiosity Mars rover shows the long rows of ripples on a linear shaped dune in the Bagnold Dune Field on the northwestern flank of Mount Sharp.

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A great quote underpinning the need for critical thinking!Visit...



A great quote underpinning the need for critical thinking!

Visit –> http://ift.tt/1eWNk1f for quality psychology information and resources.

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March 1st 1692: The Salem Witch Trials beginOn this day in 1692,...







March 1st 1692: The Salem Witch Trials begin

On this day in 1692, three women were brought before local magistrates in Salem Village, Massachusetts, thus beginning the infamous Salem Witch Trials. The women were Sarah Good, Sarah Osborne and Tituba and all three had been accused of witchcraft after local girls began experiencing strange fits. Given the lack of medical knowledge at the time and the preponderance of beliefs in the supernatural, witchcraft was the only logical explanation for their condition. The accused women matched the description of the stereotypical witch: Good was a beggar, Osborne rarely went to church and Tituba was a slave of different ethnicity. The women were interrogated by magistrates John Hathorne and Jonathan Corwin and Tituba eventually confessed to witchcraft, claiming Good and Osborne were her co-conspirators. The three were then sent to jail; Osborne died in jail, Good was hanged and Tituba (as a useful confessor) was kept alive and eventually released after the trials ended. The initial interrogation was followed by many more accusations of witchcraft throughout the village and the surrounding area, fueled perhaps by local rivalries, poisoned grain or just mass fear. The manhunt resulted in 19 ‘witches’ being hanged, one pressed to death and hundreds more imprisoned in horrendous conditions. The event is a famous example of mass hysteria and has become a cautionary tale for religious extremism and false accusations.

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