12 agosto 2017

Detailed View of a Solar Eclipse Corona


Only in the fleeting darkness of a total solar eclipse is the light of the solar corona easily visible. Normally overwhelmed by the bright solar disk, the expansive corona, the sun's outer atmosphere, is an alluring sight. But the subtle details and extreme ranges in the corona's brightness, although discernible to the eye, are notoriously difficult to photograph. Pictured here, however, using multiple images and digital processing, is a detailed image of the Sun's corona taken during the 2008 August total solar eclipse from Mongolia. Clearly visible are intricate layers and glowing caustics of an ever changing mixture of hot gas and magnetic fields. Bright looping prominences appear pink just above the Sun's limb. A similar solar corona might be visible through clear skies in a thin swath across the USA during a total solar eclipse that occurs just one week from tomorrow.

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Oração de uma criança pelo seu pai

"Oração de uma criança pelo seu pai! Neste dia tão especial quero rezar pelo meu pai. Jesus sei que tiveste também um pai, que se chamava José e uma mãe que se chamava Maria.Quero primeiro agradecer pelo pai que o Senhor me deu,Desejo ser para ele o melhor presente neste dia.E obedecer-lhe como o Senhor obedecia quando era criança.Eu queria dar um grande presente para meu pai, mas sei que o

via @notiun

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This bronze bell is one and a half feet tall! That’s a half a...



This bronze bell is one and a half feet tall! That’s a half a meter! It comes from the Eastern Zhou Dynasty circa 500s BCE. It is beautifully decorated with thirty-six studs around the body and the taotie motif—fangs, horns, and brows snaking around protruding eyes—near the lip.

These bells were an integral part of ancient court rituals. A full set consists of more than sixty bells of varying sizes. The bells had no clapper, and were struck instead with a mallet. Acoustically, each bell is capable of producing two tones depending on where it is hit: Striking along the side produces one tone, and striking along the middle results in a tone three degrees—or the equivalent of a major or minor third—away.

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Detecting Neanderthals' Ghosts

A new technique promises to revolutionize how we find and study our ancient ancestors. DNA traces can now be recovered from sediment samples! Humans and hominins leave lots of DNA in the places we visit: from stray hairs, bleeding, or pooping or peeing.

This new technique, to recover such traces of DNA, has already been used successfully in a trial study…

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"To accuse others for one’s own misfortunes is a sign of want of education. To accuse oneself..."

“To accuse others for one’s own misfortunes is a sign of want of education. To accuse oneself shows that one’s education has begun. To accuse neither oneself nor others shows that one’s education is complete.”

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Epictetu (~50 CE - 135 CE) a stoic philosopher.

He taught that philosophy is a way of life and not just a theoretical discipline.  To Epictetus, all external events are beyond our control; we should accept calmly and dispassionately whatever happens. However, individuals are responsible for their own actions, which they can examine and control through rigorous self-discipline.

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Are Unicorns Real?

fakescience:

Are Unicorns Real?

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