From Astronomy Picture Of The Day; June 5, 2013:
Except for the rings of Saturn, the Ring Nebula (M57) is probably the most famous celestial band. Its classic appearance is understood to be due to our own perspective, though. The recent mapping of the expanding nebula’s 3-D structure, based in part on this clear Hubble image, indicates that the nebula is a relatively dense, donut-like ring wrapped around the middle of a football-shaped cloud of glowing gas. The view from planet Earth looks down the long axis of the football, face-on to the ring. Of course, in this well-studied example of a planetary nebula, the glowing material does not come from planets. Instead, the gaseous shroud represents outer layers expelled from the dying, once sun-like star, now a tiny pinprick of light seen at the nebula’s center. Intense ultraviolet light from the hot central star ionizes atoms in the gas. In the picture, the blue color in the center is ionized helium, the cyan color of the inner ring is the glow of hydrogen and oxygen, and the reddish color of the outer ring is from nitrogen and sulfur. The Ring Nebula is about one light-year across and 2,000 light-years away.
Who is your favorite physicist?
Albert Einstein signature
Well, listen as Albert Einstein reads you a scientific essay. It’s his voice, in your ears, from 1941, reading his essay ‘The Common Language of Science’.
Click Here : http://is.gd/O4s3F5
More Recordings At: http://is.gd/CMzE1S
(you have an awesome blog too, by the way)
Tetryonics 27.21 - radian Lorentz co-ordinates systems of EM waves
How awesome? :D
Sunday morning… Fueling up on coffee and ambition #coffee #math #physics #science #nerd
It’s his voice, in your ears, from 1941, reading his essay ‘The Common Language of Science’. Words, I do not have them. Enjoy :)
(via Open Culture)
Happy Birthday Einstein!
Some rare captures and photo collage of Albert Einstein
Born 14 Mar 1879; died76. German-American physicist who developed the special and general theories of relativity and won the Nobel Prize for Physics in 1921 for his explanation of the photoelectric effect. Recognized in his own time as one of the most creative intellects in human history, in the first 15 years of the 20th century Einstein advanced a series of theories that proposed entirely new ways of thinking about space, time, and gravitation. His theories of relativity and gravitation were a profound advance over the old Newtonian physics and revolutionized scientific and philosophic inquiry.
“The most beautiful thing we can experience is the mysterious. It is the source of all true art and all science. He to whom this emotion is a stranger, who can no longer pause to wonder and stand rapt in awe, is as good as dead: his eyes are closed.”
“A man sits with a pretty girl for an hour, it seems like a minute. He sits on a hot stove for a minute, it’s longer than any hour. That is relativity.”
“Anyone who thinks science is trying to make human life easier or more pleasant is utterly mistaken.”
“My internal and external life depend so much on the work of others that I must make an extreme effort to give as much as I receive.”
“Imagination is more important than knowledge. Knowledge is limited. Imagination encircles the world.”