sagansense: - Richard Feynman One of my very favourite...
- Richard FeynmanOne of my very favourite quotations, and, I think, an appropriate 1000th post.
sagansense: David Hall via kateoplis
via kateoplis
"I ought to have… become a star in the sky. Instead of which I have remained stuck on earth."
"I ought to have… become a star in the sky. Instead of which I have remained stuck on earth."- Ludwig Wittgenstein (via fuckyeahexistentialism)
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"One should always be drunk. That's all that matters… But with what? With wine, with poetry, or with..."
"One should always be drunk. That's all that matters… But with what? With wine, with poetry, or with virtue, as you choose. But get drunk."- Charles Baudelaire (via larmoyante)
astrodidact: In Australia during the heatwave of 2009, a young...
In Australia during the heatwave of 2009, a young Koala stopped a cyclist and clung onto his leg asking for water. The poor Koala was so desperately thirsty that she came seeking for human help. Thankfully she was lucky to meet this kind cyclist, 'Tim Noonan'.(via WTF facts/fb)
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This is just a really lovely picture.
This is just a really lovely picture.
ikenbot: Super Moon and the Mole Antonelliana
I have been looking for this for forever.
I have been looking for this for forever.
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reallyfoxnews: A short compilation of some of the all time best...
A short compilation of some of the all time best Fox News on-air math, grammar, and competency problems.
sci-fact: The fastest object ever recorded was likely a proton...
The fastest object ever recorded was likely a proton that struck the atmosphere over Utah in 1991 known as the "Oh-My-God particle." It was traveling only 1.5 quadrillionths of a meter per second less than the speed of light, or 0.9999999999999999999999951c. This is so near the speed of light that it would take a photon traveling with a particle about 220,000 years to gain a one-centimeter lead. It is estimated that the Oh-My-God particle carried about 50 joules of kinetic energy, 40 million times that of the highest energy proton ever produced in a man-made particle accelerator. That's roughly equivalent to the energy of a baseball thrown at 100 kilometers per hour – packed into a single proton about 85 septillion times less massive. The source of these ultra-high-energy cosmic rays is a mystery, but they seem to emanate from the general direction of extragalactic supermassive black holes at the center of nearby galactic nuclei.
jtotheizzoe: Happy Manhattanhenge 2013!! I'll let Neil deGrasse...
Happy Manhattanhenge 2013!!
I'll let Neil deGrasse Tyson set this up:
What will future civilizations think of Manhattan Island when they dig it up and find a carefully laid out network of streets and avenues? Surely the grid would be presumed to have astronomical significance, just as we have found for the pre-historic circle of large vertical rocks known as Stonehenge, in the Salisbury Plain of England. For Stonehenge, the special day is the summer solstice, when the Sun rises in perfect alignment with several of the stones, signaling the change of season.
For Manhattan, a place where evening matters more than morning, that special day comes twice a year …
Today is one of those special days, when the setting sun lines up perfectly with Manhattan's street grid. Look to the west at sunset TONIGHT, May 28, and you'll see a show that would make Stonehenge's Druids bow to their sun god. So get outside and go experience the coincidental alignment of manmade structures with solar phenomena!! Don't worry if you're stuck at your desk tonight, it will happen again on July 13, 2013 as the sun makes its way south in the sky after the summer solstice.
The sun will touch the horizon at 8:16 PM ET, so get those cameras ready! It sounds like the weather kind of sucks today, but maybe you'll get lucky.
Special note to New Yorkers: Here's some good streets to aim for. If anyone would like to share their photos (assuming you can see anything through the clouds) from tonight's Manhattanhenge, feel free to email them to itsokaytobesmart at gmail.com or tweet me. Or send me a message on Tumblr! I even accept carrier pigeon?
More about the images above: The sketched tribute to Manhattanhenge was drawn by Dr. Tyson himself! Read more about it at Brain Pickings. The rest are courtesy of Flickr/Creative Commons: asterix611, @NYCphotos, 4rilla, Randy Le'Moine)
This happened in my town one night a couple months ago. The sun was just above setting at the end of a very long, straight road. It was so dim that I could look at it the whole time, it was so orange and beautiful.
robcayman: these are amazing
these are amazing
"…the spatial distance measured by two observers in relative motion is a projection of an underlying..."
"…the spatial distance measured by two observers in relative motion is a projection of an underlying 'four-dimensional spacetime distance' onto the three-dimensional space they can sense; and, similarly, that the temporal "distance" between two events is a projection of the four-dimensional spacetime distance onto their own timeline.
Just as rotating something in three-dimensions can mix up width and depth, so relative motion in four-dimensional space can mix up different observers' notions of "space" and "time."
Finally, just as the length of an object does not change when we rotate it in space, the four-dimensional spacetime distance between two events is absolute - independent of how different observers in relative motion assign "spatial" and "temporal" distances.
So the crazy invariance of the speed of light for all observers provided a key clue to unravel the true nature of the four-dimensional universe of spacetime in which we actually live.
Light displays the hidden connection between space and time. Indeed, the speed of light 'defines' the connection.
Once (Hermann) Minkowski had shown that spacetime in special relativity was like a four-dimensional sheet of paper, Einstein spent the better part of the next decade flexing his mathematical muscles until he was able to bend that sheet, which in turn allows us to bend the rules of the game. As you may have guessed, light was again the key.
"- Lawrence Krauss | The Physics of Star Trek; Ch. 2, Pg. 36 (via sagansense)
astrodidact: weetersonline: astrodidact: The Keeling Curve...
The Keeling Curve tells us how much CO2 is in the air. It's about to break 400 parts per million.
http://www.upworthy.com/the-last-time-this-awful-thing-happened-we-didnt-even-exist-2?c=bl3
The fact they couldn't understand what's going on in the third graph is enough for me to pull the ol' "stopped reading there" card.
Annnddd that ^^^ makes absolutely no sense whatsoever. What do you mean by, "couldn't understand what's going on in the third graph"? You seeing something others don't see? Keep working on your internet skills, CIE!
klaineforchristmas: onewhositswiththeturtles: Sometimes I get...
Sometimes I get really bored
this makes me uncomfortable
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