Glaucus atlanticus, or the blue dragon, is one of the most fascinating looking creatures in the ocean. And also one of the most deadly. Glaucus atlanticus can be just as dangerous on the beach. After they’ve fed on poisonous jellyfish, they have the ability to concentrate that poison within their bodies and unleash a sting more powerful than that of the jellyfish they ate. Unsuspecting beachgoers can sometimes find themselves on the painful end of that sting. Via @linda.ness.pix Follow @science.feed for more!
The chain fountain phenomenon, also known as the self-siphoning beads or the Mould effect, is a counterintuitive physical phenomenon observed with a chain of beads placed inside a jar, when one end of the chain is yanked from the jar and is allowed to fall to the floor beneath. This establishes a self-sustaining flow of the chain of beads which rises up from the jar into an arch ascending into the air over and above the edge of the jar with a noticeable gap, and down to the floor or ground beneath it, as if being sucked out of the jar by an invisible siphon. Follow @science.feed for more!
Sandpipers dancing! 🦅 Follow @science.feed for more!
Astronomers discovered a new type of Star System! The discovery consists of a binary star system (two stars orbiting each other) surrounded by a protoplanetary disk (a ring of gas and dust from which planets can form; in this case it’s about the size of our asteroid belt (about 900 million km in diameter and 140 million km thick). What makes this system different is that the stars orbit each other in a plane perpendicular to the orbit of the disk. So, if you think of the stars circling around each other like a horses on a carousel, then the disk surrounding them would be a massive Ferris wheel with the carousel at its center. Via University of Warwick/Mark Garlick Follow @science.feed for more!
Gear quenching! ⚙️ There's an electrical current running through the copper tubing, so when the gear is lowered into the loop, the gear gets heated up through induction heating. It is then submerged into water to rapidly bringing down the temperature, which causes the molecular structure of the metal to crystalize into a much harder form of the metal. Follow @science.feed for more!
F-16 afterburner. An afterburner is a secondary combustion system which burns additional fuel downstream of the combustion chamber, to further increase thrust at the expense of much higher fuel consumption. In full afterburner at low altitudes, the F-16 can burn in excess of 64,000 pounds (36,000 liters) of fuel an hour. Via @minardimaxx Follow @science.feed for more!
This is what Mars might have looked like 4 billion years ago. Mars had a vast and deep ocean, according to recent research published in the journal Science. The ocean would have covered almost 20% of the martian surface, and be well over 400 feet deep. Via NASA / ESO Follow @science.feed for more!
Mercury does not actually dissolve metals, it reacts with them in a process called amalgamation. The formation of mercury alloys is not quite like a reaction but rather a mixture (alloy) of metals similar to table salt going into solution in water. Mercury breaks the bonds of the metal lattice and forms an alloy with the target metal, just without any need for high melting temperatures. Via @nile.red Follow @science.feed for more!