are pears flammable
after 2 hours of trying to set alight to a pear i can condclude they are not flammable
mum: whats that smell
me: burning pears
me: i tried to set a pear on fire
[science clapping] well done friend
you forgot your data table:
90% of the ocean is undiscovered and you’re telling me mermaids dont exist
this actually exists and you want a fucking mermaid?
In mythology mermaids cause shipwrecks and drown people…
They’re evil motherfuckers.
Sound like my kind of people
space is weird
Did you know that if you put Saturn in water it would float?
Or that we are moving through space at the rate of 530km a second?
Or that the moon is drifting away from Earth?
What about that the light hitting the earth right now is 30 thousand years old?
Get it because it’s a CELL WALL
oh my god
can we just get this to 100k so i can post the picture i’ve been saving for a while
Behold! The supermoon!
Thanks to its close proximity to Earth over the weekend, the moon appeared up to 14% larger and 30% brighter than its everyday self, providing photographers a perfect opportunity to take some stunning photos - a selection of which can be seen above.
Photos: Aris Messinis, Menahem Kahana, Monte Fortefilippo / AFP/Getty Images, Kay Neitfeld / EPA, Scott Eisen / Associated Press, David Roark / Getty Images
Whole Foods Shows Customers the Bleak Future of Produce Without Bees
“The decline in bee populations has been all the buzz lately, which led Whole Foods Market to team up with the Xerces Society to show us what a world—or at least, produce section—without bees would look like. The University Heights, Rhode Island store removed all foods that are reliant upon the important pollinators, and it leaves a pretty slim selection; 52% of the produce department’s offerings would be pulled from shelves without bees around to help.”
Our planet is lucky enough to have a large moon orbiting not too far away, which makes for very pretty moonlit nights. But for spectacular skies it might almost be worth trading in our moon for a ring like Saturn’s.
In fact, the earth did once have a ring - as part of the formation of our moon, ironically enough. When the planet Thea crashed into the earth, a titanic amount of material was blown into space. This went into orbit around the earth, forming a ring until it all eventually coalesced into our present-day satellite. This only happened because the material was orbiting outside of earth’s Roche limit.
In 1848, the French mathematician Edouard Roche calculated that if a large satellite were to approach too closely to a planet, it would be torn apart by the planet’s gravitational forces. This happens because the gravitational attraction of a planet on a moon is not equal. The planet pulls more on the side of the moon closest to it and less on the side further away. If the moon gets too close, this unequal pull can become great enough to tear the moon apart. Every planet has what is called a Roche limit.
Some astronomers believe that Saturn’s rings are material that was unable to form into a moon because it lies within the planet’s Roche limit. The gravitational pull of Saturn prevents particles from clumping together to form a moon. Another idea popular among scientists suggests that during the time when Saturn was first forming, it had one or more moons just outside its Roche limit. The bigger a planet is, the more gravity it has. And the more gravity it has, the bigger its Roche limit is. So as Saturn grew larger, its Roche limit grew, too. The limit soon moved past the inner moons and these moons soon broke apart. The remnants of the destroyed moons eventually formed the magnificent rings we see today. There may still be large pieces of these ancient moons within the rings. They would be much smaller than their ancestors but a thousand times larger than a typical ring particle. Another theory suggests that a few hundred million years ago - at a time when the early ancestors of the dinosaurs were roaming Earth - Saturn may have had no rings at all. The rings formed when one or more small moons wandered too close to Saturn. When they got within the Roche limit, Saturn’s gravity ripped them apart. After millions of years of bumping against one another, the pieces of moon were ground into the tiny particles that form the rings today.
If we had rings in the same proportion to our planet that Saturn’s are to it, it is pretty easy to figure out what they would like like from different places on the earth. From the equator the rings would be passing directly overhead. Since you’d be looking in the same plane as the rings, all you would see is a bright line arching from horizon to horizon. Here is what the rings might look like from Quito, Ecuador:
If we travel just a little further north to Guatemala, the rings begin to spread across the sky. The earthlight illuminating the dark side of the moon is many times brighter than we are accustomed to, due to the increased sunlight being reflected from the rings.
From Washington, DC (at 38° latitude), the rings begin to sink below the horizon, though they would still be an awe-inspiring sight as they dominate the sky both day and night.
At the Arctic Circle, the rings barely reach above the horizon. Seen here from Nome, Alaska, the brilliant rings illuminate the barren landscape scarcely more than a full moon would. Unlike the sun or moon, however, the rings neither rise nor set… they are always visible, day or night, always in exactly the same place.
What about the giant perpetual shadows that rings would make across the face of the earth? Maybe there’d be rainbows but I’d rather have moon light than rings ::)
The strongest ‘pound for pound’ muscle is the uterus: it weighs around 2 pounds but during childbirth can exert a downward force of 400 Newtons, which is one hundred times as strong as gravity and equivalent to the power in a fully extended modern longbow.
“No matter what direction you view this image from the gun will be pointing at you.”
fucking jesse pinkman breaking science
I literally walked all around the living room. It really did follow me everywhere. Even at this angle.
are you blogging from your tv
What Would Happen if Oxygen Were to Disappear for Five Seconds?
A few things:
- Everyone at the beach would get sunburns. Ozone is molecular oxygen and blocks the majority of UV light. Without it, we are toast.
- The daytime sky would get darker. With fewer particles in the atmosphere to scatter blue light, the sky would get a bit less blue and a bit more black.
- Every internal combustion engine would stall. This means that every airplane taking off from a runway would likely crash to the ground, while planes in flight could glide for some time.
- All pieces of untreated metal would instantly spot-weld to one another. This is one of the more interesting side effects. The reason metals don’t weld on contact is they are coated in a layer of oxidation. In vacuum conditions, metal welds without any intermediate liquid phase ().
- Everyone’s inner ear would explode. As mentioned, we would lose about 21 percent of the air pressure in an instant, equivalent to being teleported to the top of the high Andes (elevation, about 2,000 meters).
- Every building made out of concrete would turn to dust. Oxygen is an important binder in concrete structures (really, the CO2 is), and without it, the compounds do not hold their rigidity.
- Every living cell would explode in a haze of hydrogen gas. Water is one third oxygen; without it, the hydrogen turns into gaseous state and expands in volume.
- The oceans would evaporate and bleed into space. As oxygen disappears from the oceans’ water, the hydrogen component becomes an unbound free gas. Hydrogen gas, being the lightest, will rise to the upper troposphere and slowly bleed into space through.
- Everything above ground would immediately go into free fall. As oxygen makes up about 45 percent of the Earth’s crust and mantle, there is suddenly a lot less “stuff” beneath your feet to hold everything up.
To sum, it wouldn’t be pretty.
So I walked into the physics lounge this morning…
fucKING PHYSIC STUDENTS
A thousand fuck yeahs for science.
Richard III : The twisted bones that reveal a king
- When Richard was killed at the Battle of Bosworth Field in 1485, he was said to have been buried in Greyfriars church, Leicester. But this church was lost until archaeologists excavated a car park and discovered medieval remains. Victorian foundations had almost destroyed the entire grave and the feet were lost, but the bones still promised to provide a treasure trove of information - would they also reveal a king?
- Richard III was portrayed by Shakespeare as having a hunched back and the skeleton has a striking curvature to its spine. This was caused by scoliosis, a condition which experts say in this case developed in adolescence. Rather than giving him a stoop, it would have made one shoulder higher than the other. Highlighted are the facing sides of the 10th and 11th thoracic vertebrae, showing uneven growth as the spine bent.
- Evidence of a number of wounds were found on the skeleton but the face area was largely unmarked, apart from a sliced cheekbone. The skull has undergone a CT scan and the results will be used to reconstruct the king’s appearance. No portraits made during his lifetime have survived and some later copies show signs of having been altered to make him appear more sinister.
- The back of the skull shows dramatic injuries. One consists of a hole near the spine, where a large piece of bone has been sliced away by a heavy bladed weapon such as a halberd. This, along with a smaller wound opposite, may well have been a fatal injury. A smaller dent which cracked the inside of the skull, is thought to have been caused by a dagger. There are a further five wounds on the skull, all inflicted around the time of death.
- The teeth of the skeleton have provided important information. As well as evidence of disease and tooth decay, calcified plaque can be analysed for evidence of diet and environment. He had lost several of his back teeth before he died, probably due to dental caries. DNA samples were extracted from the teeth and the right femur to compare with known descendants of Richard’s family. Despite the potential for DNA to degrade, a match was found.
The back of the skull shows dramatic injuries. One consists of a hole near the spine, where a large piece of bone has been sliced away by a heavy bladed weapon such as a halberd. This, along with a smaller wound opposite, may well have been a fatal injury. A smaller dent which cracked the inside of the skull, is thought to have been caused by a dagger. There are a further five wounds on the skull, all inflicted around the time of death.
Interactive feature produced by Greig Watson, Christine Jeavans, Mick Ruddy, Sophia Domfeh and Paul Kerley.
Photographs by University of Leicester and Jeff Overs. Portrait of Richard III: Collection of the Society of Antiquaries of London.