Burning Metal
You might think that metal isn’t flammable, but if you can get it hot enough & expose it to enough oxygen, it’s easy. Here you can see some steel wool which has been heated to over 700 degrees celcius, using nothing but a battery. How? Find out in this video which shows you what you need to perform this beautiful science experiment at home: http://youtu.be/jCbj6tjCKIo

Burning Metal

You might think that metal isn’t flammable, but if you can get it hot enough & expose it to enough oxygen, it’s easy. Here you can see some steel wool which has been heated to over 700 degrees celcius, using nothing but a battery. How? Find out in this video which shows you what you need to perform this beautiful science experiment at home: http://youtu.be/jCbj6tjCKIo

Total internal reflection
Here you can see the light from a laser being bent as it follows the path of a stream of flowing water. This happens because the angle at which the light from the laser hits the surface of the water is beyond the ‘critical angle’ - instead of refracting the light, it’s reflected internally. This ‘total internal reflection’ is a property used in fibre optic cable to transmit signals of light over great distance, allowing light to bend around corners. To see how you can do this demonstration for yourself & for an answer to the question: what colour is a mirror? Check out this video: http://youtu.be/woN9KpAGv4I

Total internal reflection

Here you can see the light from a laser being bent as it follows the path of a stream of flowing water. This happens because the angle at which the light from the laser hits the surface of the water is beyond the ‘critical angle’ - instead of refracting the light, it’s reflected internally. This ‘total internal reflection’ is a property used in fibre optic cable to transmit signals of light over great distance, allowing light to bend around corners. To see how you can do this demonstration for yourself & for an answer to the question: what colour is a mirror? Check out this video: http://youtu.be/woN9KpAGv4I

skunkbear:

Scientists at MIT have developed a new simulation that traces 13 billion years of cosmic evolution. They start the simulation shortly after the big bang with a region of space much smaller than the universe (a mere 350 million light years across).  Still, it’s big enough to follow the forces that helped create the galaxies we see today, and correctly predict the gas and metal content of those galaxies.

At first, we see dark matter clustering due to the force of gravity (first two GIFs). Then we see visible matter — blue for cool clouds of gas where galaxies form, red for more violent explosive galaxies (second two GIFs).

Super massive blackholes form, superheating the material around them, causing bright white explosions that enrich the space between galaxies with warm but sparse gas (fifth GIF).

Different elements (represented by different colors in the sixth GIF) are spread through the universe.

We arrive at a distribution of dark matter that looks similar to the one we see in our universe today (seventh GIF).

The simulation is so complex it would take two thousand years to render on a single desktop. And it’s kinda beautiful.

Image Credit: MIT and Nature Video

zerostatereflex:

Zoom Into a Microchip

It is absolutely crazy how tiny we can make things today.

What we’re seeing here is a standard microchip, older though in principle the same as modern cell phone chip.

At the micro level we’re dealing with this comparison:

"A micron is 1 millionth of a meter, 10-6 or 10-3 of a millimeter. Very tiny. It is abbreviated with the greek letter for M, or the mu."

It takes 100,000 Microns to equal about 4 inches and toward the end of the set we’re in the 1 micron range.

science-junkie:

Every Asteroid Discovered Since 1980
From the far, far away to the startlingly close, there have been over 600,000 asteroids identified in the inner solar system since 1980. This visualization tracks them all.
The video is the work of Scott Manley. Manley included the path of the near-by asteroids that have been identified starting 34 years ago and carrying on to this year. The asteroids that cross our own orbit are in red, the ones that just get close are in yellow, and the ones even further out are all in green.
Source: io9.com

science-junkie:

Every Asteroid Discovered Since 1980

From the far, far away to the startlingly close, there have been over 600,000 asteroids identified in the inner solar system since 1980. This visualization tracks them all.

The video is the work of Scott Manley. Manley included the path of the near-by asteroids that have been identified starting 34 years ago and carrying on to this year. The asteroids that cross our own orbit are in red, the ones that just get close are in yellow, and the ones even further out are all in green.

Source: io9.com