Reddit’s mind-blowing sentences
So, a while back I saw a Reddit thread about mind-blowing sentences and what struck me was how many of the best had foundations in scientific disciplines, from human conciousness to genetics. Seeing these sentences, I couldn’t help but put together a nice album that I knew us Tumblrs would love.
In case the hydrogen one has you stumped, as reddit user ‘Propionate’ put it:
“Really hot plasma, Hydrogen, Big clouds of hydrogen, Big balls of hydrogen, stars, supernova, heavier elements like carbon, clouds of heavier elements, big balls of heavier elements, planets, life, humans”
Everyone should make it a point to think about something like this at least once a day.
Elegant ideas for an elegant home. These vinyl wall decals are available from the Cut N Paste Etsy shop.
Science-influenced wall decals should have a place in every home.
A magnetic field visualized
Love simple, effective demonstrations like this!
Speaking of magnetism, have you seen this amazing ferrofluids video yet?
Kelvin-Helmholtz Instability manifested in clouds.
It happens when two mediums (wind and cloud) meet at different velocities and produce waves. Sort of like blowing across a glass of water.
DEEP BREATH. In. Out. Be calm.
You might have heard some news about something called a “neutrino” that might have moved faster than the speed of light. This news is out of CERN, in Europe, and like Ron Burgundy, it’s kind of a big deal.
Remember Einstein’s E=mc² equation? Well, that wouldn’t exactly be ruined, but relativity would need to be seriously adjusted. As Phil Plait put it, it would turn so much of physics upside-down that it’s like saying “… that gravity pushes, not pulls.” So what did they observe?
A neutrino is a particular subatomic particle, like an uncharged electron. They travel, well, very fast, and can go through matter. Photons are light, and they travel at (wait for it) the speed of light. According to what we know up to now, neutrinos should travel fast, but according to the laws of physics not as fast as light. That’s where the CERN experiment comes in.
The scientists at CERN set up a detector at a very exact distance away from a source of photons and neutrinos. When I say exact I mean exact. Like so precise that they could be within a meter or so of error at a distance of 730 km apart. They know how fast light travels, and it should have taken about 2.43 milliseconds for the light to reach the detector in Italy from CERN. According to the scientists, the neutrinos arrived 60 nanoseconds before the light.
The Swiss are impeccable time-keepers.
They report that their error is within 10 nanoseconds, so it’s a significant result. But there are a couple of problems. Not problems that for sure disprove it, but certainly give reason for caution.
- It’s very hard to know exactly when neutrinos are created in whatever source you are shooting them from. So the “start” point is a little fuzzy.
- As noted at Bad Astronomy, a supernova called 1987a throws some more cold water on this. See, that supernova was 160,000 light years away. So if neutrinos traveled faster than light by the same ratio as above, we would have seen the 1987a neutrinos about four years before the light. And that didn’t happen.
- Neutrinos are pesky little things, and very hard to control and measure, being as they flow right through planets and the like.
The scientists had a webcast from CERN today, and they are being very careful to say that this needs to be checked and über-checked, and then repeated again after that. They also claim no theoretical re-writes on history. The problem is that the press is not being nearly so cautious.
So take a deep breath, relax, let their fellow scientists and the skeptics have at it for a while, and don’t be sad if this turns out to not be as big a deal as thought. Of course, it might be true, but when it comes to extraordinary claims, you have to provide extraordinary proof.