In 2013, there was a train crash in Australia caused by millipedes. There were so many of them on the tracks that a train pulling into a station ended up losing friction from squishing so many of them and crashed into another train. theatlantic.com/technolog…
Today I learned of two neighbor galaxies nicknamed "Akira" and "Tetsuo". Akira is a 'red geyser': a galaxy that has stopped making stars because its massive black hole is stealing gas from a nearby galaxy, Tetsuo, leading to friction and temperatures that prevent gas from clumping together (1million+ degrees) geekandsundry.com/meet-ak…
The world's oldest roller coaster "Leap The Dips" built in 1902 is the only remaining side-friction roller coaster in North America youtube.com/watch?v=loQDD…
The Burj Khalifa was built on sand without bedrock. It is held up by a big concrete slab on its base, that works like a big snow shoe preventing it from sinking. Below it, 194 shafts of concrete were dug into ancient seashell dust, making friction the only thing holding up this skyscraper. youtu.be/sDsNChjaLW8?t=95
Friction ridge skin impressions (fingerprints) were used as proof of a person’s identity in China over 2000yrs ago. academia.edu/5908317/A_Hi…
The German Panzerschreck (WWII) had a barrel diameter of 91mm despite firing 88mm shaped charges. It was crimped on three sides down the length, thus reducing friction and allowing for wear and tear (dents) to not affect performance bergflak.com/pstube.html
When helicopters kick up sand while they are spinning blades, the sand creates a static discharge from the friction of the rotor blades spinning. This generates a bright light surrounding the blades as they spin. youtu.be/ny2ueQEmkEk
Helium is the only substance that can't freeze. Instead, once it reaches a temperature below it's melting point, it turns into a superfluid with zero friction. scientificamerican.com/ar…
Since Japanese honeybees don't have big enough stingers to pierce giant hornet exoskeletons, they instead attack by swarming them in "hot bee balls" and cooking them to death. The friction of the buzzing bees can reach 117Β° F / 47Β° C at the core of the bee ball. youtube.com/attribution_l…
Crows drop rats on airport runways to kill them, since the friction from the landing shreds the rat open for consumption. They also drop nuts on roads for cars to run over so they can be opened/broken to pieces. westernfieldornithologist…
Ships are painted red below the water line to aid efficiency and speed through the water as marine growth on the ship’s hull increases friction and slows down the speed – therefore ships "bottoms" are most often painted in a red copper anti-fouling paint. nauticapedia.ca/Articles/…
A microwave heats your food up by vibrating water molecules between your food which creates friction, causing heat. scientificamerican.com/ar…
Applying chalk to a billiard cue increases the amount of friction between the ball and the cue, preventing the tip slipping from the ball during a strike. It is also not made of chalk, but a substance called corundum (aluminum oxide and silica). legacybilliards.com/blog/…
Workers constructing Beijing's Forbidden City created an artificial ice path to carry stones to the site. The path was lubricated with water as the sledges with the stones passed. This reduced friction and let stones slide before the water refroze, allowing for much less effort. news.nationalgeographic.c…
The world's oldest roller coaster, "Leap The Dips", was built in 1902 and is the only remaining side-friction roller coaster left in North America youtube.com/watch?v=loQDD…
Art historians dismissed some doodles in da Vinci’s notebooks as β€œirrelevant.” But in 2016 a Cambridge professor found that one page of these scribbles actually contained the first written records demonstrating the laws of friction sciencealert.com/engineer…
The "squeaky clean" feeling you get from showering is actually caused by friction from the residual soap left behind after using hard water. water.usgs.gov/edu/qa-che…
Today I learned of Nipple Bleeding, caused by friction between the clothes and nipples while running for an extended period of time runnersworld.com/health-i…
In a Universe without Friction, one can measure Ο€ by Momentum and Mass youtu.be/HEfHFsfGXjs
Microwaves work by vibrating particles within food, such as water, heating food through use of friction. This also means that anything that doesn't have liquid in it is unaffected by the microwaves, i.e plates, paper, plastic Ect. businessinsider.com/how-d…
Today I learned of the Robbers Cave experiment, where 2 groups of 11 year old campers were placed in conflict with each other to investigate intergroup friction. It took 3 weeks to teach them to hate each other and turn them into violent mobs. psychclassics.yorku.ca/Sh…
The coefficient of friction of a banana on hardwood flooring is 0.083, while ice has a coefficient of friction of 0.05, making a banana almost as slippery as ice. sciencenews.org/blog/scic…
There is a medical condition known as cunnilingus tongue or cunnilingus syndrome. Traumatic lesions on the ventral surface (undersurface) of the tongue, especially the lingual frenulum, can be caused by friction between the tongue and the mandibular central incisor teeth during cunnilingus. en.wikipedia.org/wiki/Fre…
That because of the Moon's gravity causing tidal friction, one day on Earth is slowly getting longer. slate.com/technology/2012…
If Earth did not have a moon our day would be less than 10hrs long. This is due to the friction caused by the changing tides. earthsky.org/earth/moonle…
You should never "double wrap it." Using two condoms can cause friction between them, weakening the material and increasing the chance that the condoms might break. kidshealth.org/en/teens/2…
Physics dictate that unless otherwise contained a river will never flow straight for a distance greater than 10 times its width. It has to do with the center flowing faster and the friction induced by the banks. eps.berkeley.edu/people/l…
On the concorde although the outside temperature at cruise altitude (18,300 m) is around -69.7Β°F (-56.5Β°C), due to the air pressure and friction, the temperature of the aircraft’s skin varied from 261Β°F (127Β°C) at the nose to 196Β°F (91Β°C) at the tail, windows felt hot from the inside heritageconcorde.com/airf…
Curling ice is actually different than other kinds of ice. Ice makers use a technique called pebbling. Pebbling involves freezing small droplets of water across the playing surface between each match to reduce friction. smithsonianmag.com/innova…
'dry lubricants' are materials such as graphite, which despite being solid, are able to reduce friction between two surfaces sliding against each other without the need for a liquid medium. en.wikipedia.org/wiki/Dry…
Wood can be friction welded youtube.com/watch?v=X0k04…
In 1956, due to a combination of air friction and a steepened dive path, an F-11 Tiger shot itself down with its own gunfire aviationtrivia.blogspot.c…
Superfluid Helium-4 can leak through glass, climb over walls, and has zero friction youtube.com/watch?v=2Z6UJ…
There is no scientific correlation of the old wives tale of cracking your knuckles will cause Arthritis, the cracking is caused by small bubbles bursting fluid which helps lubricate the areas between bones and reduces friction for ease of movement. mentalfloss.com/article/5…
The length of a day increases 20ms every thousand years due to tidal friction from the moon; 2.4bya days were only 11 hours long sciencedirect.com/science…
There is enough friction if you close the pages of two phonebooks onto each other to hold up the weight of a grown physics professor youtube.com/watch?v=EUDZ_…
It is possible to weld wood together using pressure and friction. web.utk.edu/~mtaylo29/pag…
Up to the 1970's car manufacturers put whale oil in automatic transmissions to reduce friction en.wikipedia.org/wiki/Aut…
, the sound that comes from snapping your fingers comes from your finger hitting your palm, not from the friction of the thumb and finger snapping. scienceworld.ca/how-do-yo…
Objects entering Earth's atmosphere heat up primarily because as they fall they cause the air in front of them to compress and get hot, NOT from the friction with the air. en.m.wikipedia.org/wiki/A…
When John Walker used a stick to stir a pot containing antimony sulfide, potassium chlorate & sulfur, some of the mixture stuck to the end of the stick. When he tried to scrape the lump, it easily caught fire (due to friction) & this led to the birth of friction matches. en.wikipedia.org/wiki/Joh…
A Great Storm devastated England in 1703. The damage included more than 400 destroyed windmills; in some the sails turned so fast that the friction caused the wooden wheels to overheat and catch fire, burning them down. en.wikipedia.org/wiki/Gre…
"Cities Attract Hurricanes" At least one research paper indicates that areas of increased surface friction (forests, tall buildings) can attract the eye of a hurricane insidescience.org/news/ci…
Meteorites hit the ground cold, even though friction can create fireballs around meteors as they fall through the atmosphere. science.nasa.gov/science-…
There was a man named Johnny Kennedy whose skin fell off at the slightest touch. Despite being in constant agony, he kept up a positive outlook. In his documentary, he made a joke that "Any bumps or excessive friction, such as constant wanking, doesn'tο»Ώ go well with the condition". youtube.com/watch?v=Dmahl…
The coefficient of friction between a banana peel and a linoleum floor has been empirically tested to be roughly 0.07, which is roughly equivalent to the coefficient of friction between ice on ice. en.wikipedia.org/wiki/Ban…
When a Band-aid wrapper is pulled apart it emits a blue glow. Also, many other objects emit this glow when friction occurs webexhibits.org/causesofc…
Watches contain rubies and sapphires because they are inserted at the points of heaviest wear in order to reduce friction. Having a hardness value second only to diamonds, they eliminate metal-on-metal stress. ablogtowatch.com/ask-watc…
A person's fingerprints are formed when they are a tiny developing baby in their mother's womb. Pressure on the fingers from the baby touching, and the surrounding embryotic fluid create what are called "friction ridges", the faint lines you see on your fingers and toes. smithsonianmag.com/videos…
Psychological sweating (armpits, palms, etc) evolved as a fleeing reaction and primitive function that was important when hunting animals or fighting enemies. Sweat on the palms and soles can improve friction by controlling the humidity of the outer skin layer, leading to an improved grip. karger.com/Article/FullTe…
Modern flame lighter was created before than modern friction matches. historyofmatches.com/
There is a phenomenon known as quantum locking that lets us 'levitate' objects without any energy loss and zero friction. ted.com/talks/boaz_almog_…
The SR-71 Blackbird leaked fuel until it went fast enough that friction from the air heated the titanium body panels of the aircraft to the point that they expanded, sealing the gaps between them that enabled the aircraft to function at speeds above Mach 3. sr-71.org/blackbird/sr-71…
"ball bearing" is the name for the machine element assembly in which (often steel) balls are used to reduce rotational friction and support radial and axial loads. The balls themselves are simply called balls. en.wikipedia.org/wiki/Bal…
Despite the friction between the two countries, modern Russia traces its origins to the area that is present-day Ukraine en.wikipedia.org/wiki/Kie…
The abrasive matter in toothpaste (the powder mixed with the paste that creates friction to help scrape things off your teeth) has roughly the same scrape capacity as 600 - 800 grit sandpaper. youtu.be/cwN983PnJoA?t=20…
Even though a rail gun has no propellant fuel, the projectile is travelling so fast that the friction with the air causes it to ionize resulting in a plasma muzzle flash. dtic.mil/dtic/tr/fulltext…
Spacecraft get heated during atmospheric re-entry because they compress the air in front of them, and not due to friction. wikiwand.com/en/Atmospher…
Spider-man sticks to walls by enhancing "the flux of inter-atomic attractive forces on surfaces he touches, increasing the coefficient of friction between that surface and himself." thegeektwins.com/2011/07/…
Acoustic absorption devices (sound-proofing) like basstraps function by turning sound energy into heat through friction en.wikipedia.org/wiki/Bas…
If you intertwine the pages of 2 yellow pages it takes 8000lb of force to pull them apart. All due to friction youtube.com/watch?v=hOt-D…
California has more rigidity and friction in both its housing market and in renting than other states; one study ...attributed this change to Proposition 13. en.wikipedia.org/wiki/Cal…
Johnson & Johnson developed a testing machine for toilet paper and paper towels called the Handle-o-Meter. "Handle" refers to the combination of surface friction and flexibility of the materials. en.wikipedia.org/wiki/Han…
Jim Henson's Muppets were regular "cast members" on the first season of Saturday Night Live, but there was friction between the furry folks and the human cast and writers, and John Belushi referred to them as the Mucking Fuppets. muppet.wikia.com/wiki/Joh…
The jewels in mechanical watches serve a useful purpose by reducing friction on the gears, thus making them more accurate. en.wikipedia.org/wiki/Jew…
Meteors burn due to an increase in pressure when they hit the atmosphere, NOT because of friction with the air. science.howstuffworks.com…
Runners sometimes get a condition called "joggers nipple" A condition that can be caused by friction that can result in soreness, dryness or irritation to, or bleeding of, one or both nipples during and/or following running or other physical exercise. en.wikipedia.org/wiki/Fis…
Air friction from ejecting from an SR-71 Blackbird at Mach 3 instantly heats the pilot up to 450 Β°F. en.wikipedia.org/wiki/SR-…
Vehicles reentering Earth's atmosphere aren't heated by friction with air but from the shock wave in front of the vehicle. en.wikipedia.org/wiki/Ree…
The first friction match was invented because of an accident by John Walker in 1826. prospect.rsc.org/blogs/cw…
Flint is not what ignites when struck against steel, it is actually small iron particles scraped off from the steel which spontaneously ignite as a result of friction in the presence of oxygen. en.wikipedia.org/wiki/Fir…
There is a technical society dedicated to all things friction, wear, and lube en.wikipedia.org/wiki/Soc…
The Concorde would expand by nearly one foot during supersonic flight due to heat caused by air friction en.wikipedia.org/wiki/Con…
When a meteor or spacecraft enters the atmosphere, the heat of entry is not (primarily) caused by friction, but by adiabatic compression of air in front of the object en.wikipedia.org/wiki/Atm…
To reduce friction, the transport vehicles for the Saturn V rockets travel on a road made from Tennessee and Alabama river rocks science.howstuffworks.com…
Inflatable space station module are more a reality than science friction. The modules are created using a lightweight, soft-skinned material with similar properties to Kevlar, and hold several advantages over existing options for housing astronauts. en.wikipedia.org/wiki/Inf…
Our atmosphere rotates with Earth because of friction from the weight of the itself. physics.stackexchange.com…
Heating during atmospheric re-entry is caused by compression of the air, not friction. en.wikipedia.org/wiki/Aer…
There is a runway in Antarctica that has appriximately 10 flights per year and is made out of glacier ice - it has to be levelled with lasers to maintain enough friction for landing aircraft en.wikipedia.org/wiki/Wil…
The in theory impossible friction-less fountain is possible, and was made as long ago as the 1930s using liquid Helium youtube.com/watch?feature…
The modern lighter was invented 3 years before the invention of friction matches ehow.com/info_8220470_182…
Stick insects use both sticky pads to stick and special hairy pads to cause enormous amounts of friction to hold on to surfaces, alternating depending on terrain and direction. eurekalert.org/pub_releas…
The heating that objects occur when they enter our atmosphere from space isn't friction at all reddit.com/r/askscience/c…
There's a rare disorder where skin tears and blisters at the slightest friction making 70% body an open wound rafisrun.com/about-eb/
The heating of spacecraft during re-entry is not caused by friction, but a phenomena known as compressive heating mit.edu/people/daveg/Humo…
Bees induce a static electric charge from friction in the air which helps them harvest pollen. youtube.com/watch?v=3vVUh…
Earth's mean solar day is now slightly longer than it was during the 19th century due to tidal friction. en.wikipedia.org/wiki/Ear…
Things entering the atmosphere do not burn due to friction, but due to the compression of the air in front of them. howstuffworks.com/questio…
Using only friction and internal juices, pieces of lumber can be fused into structural joints nordicforestresearch.org/…
Superconduction plays a role in MRI machines and has a variety of applications ranging from maintaining a current with no applied voltage what so ever to providing use in applications where low resistance/friction is required (ex. Maglev Trains). youtube.com/watch?feature…

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