Eratosthenes, a Greek mathematician and astronomer (276 BC), measured of Earth's circumference by using the shadow angles from the sun in two locations. He calculated it was 39,375 km, which is 1.4% less than the real number of 40,076 km en.wikipedia.org/wiki/Era…
Bee's waggle their bodies in the hive when they walk around. They use mathematics to tell other bees the distance, direction and angle to point others towards flowers, water or a new hive. en.wikipedia.org/wiki/Wag…
In 1960s, Spanish dictator Franco advised US President Johnson to avoid military confrontations in Viet Nam and focus on political angle, and to advise him to be friendly with Ho Chi Minh history.state.gov/histori…
In 1984 NASA crashed a fully fueled Boeing passenger jet, with crash dummies as passengers and pilots into the Mojave desert. The crash was filmed from multiple angles at high speed in 16MM film. The knowledge gained from this test lead to major changes in airline flight safety standards. supercluster.com/editoria…
Guitarist Les Paul fragmented his elbow in a car accident. Doctors couldn’t rebuild it so Les told them to fuse it together in a 90 degree angle so he could keep playing. He then recorded his biggest hit. npr.org/2015/06/09/413178…
Your face looks distorted in selfies because it is a wide-angle lens, compared to real life/in the mirror howtogeek.com/678397/why-…
A steering automatically returns to the center because engineers have achieved the return motion of the steering wheel solely by giving the front wheels an angle, called a caster angle. youtube.com/watch?v=wLbs8…
Today I learned about a geographic oddity caused by surveying errors, affectionately known as the Angle. The Northwest Angle's only land link is its western border with Manitoba. It's technically part of Minnesota β€” but with Lake of the Woods to the south, it shares no land connection with the United States. bbc.com/news/world-us-can…
Sailships aren't really moved by the wind blowing into the sail and pushing it forward. The curved shape of the sail creates a lift force acting forward, same the aerodynamic lift that makes an aircraft fly. The wind direction can be of almost any angle relative to the ship. discoverboating.com/resou…
Signs of bullimia nervosa are often spotted by dentists. Between 47 and 93% bulimia nervosa patients have signs of tooth erosion due repeated exposure to gastric acid and binge consumption of high-sugar foods. They may also display gum irritation and bleeding and sores on the angles of the lips. verywellmind.com/bulimia-…
Helicopter rotor blades spin at a fairly constant speed and only gain lift by altering the angle of the blades. The centrifugal force is too much to attempt to alter the blade RPM enough to generate lift. phs.com.au/how-does-it-fl…
Moths don't like light at all! They use moonlight to navigate by night. By keeping the moon at a constant angle, they could ensure they traveled in a straight line. Unfortunately, they now confuse electric lights with the moon and try to navigate by them so they keep going around it, confused. theguardian.com/notesandq…
The original reason why umbrella handles are curved is to make it easier for servants to hold the umbrella at an angle to shield their employer gentlemansgazette.com/umb…
The LA Dodgers started wearing red numbers on the front of their uniforms in 1951, so fans watching on TV could tell players apart. Red showed up better on black and white TVs, and most camera angles only showed the fronts of players. uni-watch.com/2013/10/16/…
Many casinos try to avoid making you ever have to turn in a right angle by design, as such a hard turn forces people to call upon the decision-making parts of their brain; something that casinos naturally want to avoid. vox.com/2014/8/7/5976927/…
In 2008, NASA announced that Saturn's moon, Rhea, may have a tenuous ring system. This would mark the first discovery of rings around a moon. However, when Cassini made targeted observations of the putative ring plane from several angles, no evidence of ring material was found en.wikipedia.org/wiki/Rhe…
Before MRI scans were widespread, doctors used an extremely painful X-ray to look at the brain where the CSF was drained and replaced with air. They would strap patients into a rotating chair to angle them upside down so that the fluid would be fully replaced in different parts of the brain. en.wikipedia.org/wiki/Pne…
Why northern light is so valuable for painters and sculptors. It's because northern light is consistent during the day, no matter what position the sun is in. It doesn't move through the studio at different angles, the different intensities making it hard to keep colors consistent. finearttips.com/2010/01/w…
Iconic scare from 2002's The Ring wasn't Amber Tamblyn in makeup, playing dead. It was actually a body double created by the now retired effects legend Rick Baker who photographed Tamblyn from multiple angles to make the figure look as convincing as possible. syfy.com/syfywire/hallowe…
We measure angles out of 360 degrees because the Sumerians divided the circular path of the sun in the sky into 360 degrees to track the sun's daily position, it took about 360 days for the sun to complete a full circuit across the sky. This all happened approximately 2400 BC. en.wikipedia.org/wiki/Deg…
Government in Japan runs dating ads in which they tell the women what kind of stocking to wear and even at what angle to tilt your head when looking at a man to attract him youtu.be/a1jGZUbN06M
Brushing your teeth at a 45 degree angle, also known as the Bass Technique or the Modified Bass Technique, is superior at removing supragingival plaque (i.e. above the gumline) compared to normal toothbrushing. ncbi.nlm.nih.gov/pubmed/1…
Nearly all the castles depicted in Monty Python and the Holy Grail are actually Doune Castle from different angles en.wikipedia.org/wiki/Dou…
The ancient Greeks had known the world is round since Pythagoras, and successfully calculated the circumference of the globe when Eratosthenes measued the angles of the mid-day sun between two towns of a known distance. His calculation had only about a 10% margin of error. khanacademy.org/partner-c…
An Ohio company including a physicist & biomimicry expert is developing a football helmet liner based on the shock-absorbing pelt of hedgehog quills. They've mimicked the structure of a hedgehog quill with a polymer which lets it bend but not break & mimicked the spacing & angle of each quill. radio.wosu.org/post/desig…
When making the movie Avatar, they would film the motion capture from all angles. After the actors are rendered, the director would walk onto the set with a "virtual camera", which would allow him to film as if he were in the CG environment. TL;DR, they filmed using virtual reality. popsci.com/technology/art…
In ancient Rome, famous gladiators endorsed products just like modern athletes do. Some of these endorsements have survived in ancient frescoes. The makers of the film Gladiator downplayed this historical angle on the assumption that modern audiences would not believe it. faculty.uml.edu/ethan_Spa…
The archer fish's most notable attribute is its uncanny ability to fire a "super-soaker" jet of water to knock down its insect prey into the water where it is quickly eaten. They can spray up to 10 ft with astonishing precision while at the same time compensating for the water refraction angle. en.wikipedia.org/wiki/Arc…
Bees dance to each other in the hive to tell each other where to find good pollen. The angle of the dance is the angle relative to the sun, the tempo of dance is the distance, the duration of dance is the quality of the pollen, and the dancer hands out free samples to whoever’s watching! articles.extension.org/pa…
Pope Gregory I, upon encountering fair-skinned, blue-eyed children, asked who they were. Being told Angles (Anglo-Saxons), he punned, "Non Angli, sed angeli," or "Not Angles, they're angels." en.wikipedia.org/wiki/Pop…
A coach for the Los Angles Angels in the early 90s was at one point a roommate of Babe Ruth en.wikipedia.org/wiki/Jim…
Britain's current population is derived from waves of human migration beginning as far back as 5,000 BCE, with the beaker people of Eastern Europe. Other migrations include the Romans (43 - 410 AD), the Angles, Jutes and Saxons (400-700 AD), Norsemen (793-1066AD) and Normans (1066 AD). en.wikipedia.org/wiki/His…
Neanderthals approached animals very closely and thrust, not threw, their spears at the animals, most likely from an underhand angle. This confrontational way of hunting required careful planning and concealment, and close cooperation between individual hunters. phys.org/news/2018-06-nea…
Even though the half-life of LSD is only about 30 minutes, its hallucinogenic effects can last up to 18 hours because the molecule gets stuck at an angle within the brain's serotonin receptor and cannot dislodge itself. popsci.com/lsd-gets-stuck…
The English horn is not english at all. Its name comes from a mistranslation "cor angle", which means "angled horn" in French, heard instead as "cor anglais." dictionary.onmusic.org/te…
In a rip current, death by drowning occurs when a person has limited water skills and panics, or when a swimmer persists in trying to swim to shore against a strong rip current, thus eventually becoming exhausted and unable to stay afloat. Usually swimmers can exit by swimming at a right angle en.wikipedia.org/wiki/Rip…
Each human eye individually has anywhere from a 120-200Β° angle view, depending on how strictly one defines objects as being "seen." The dual eye overlap (the area where the vision of both eyes overlap) is 130Β° which is similar to a fisheye lens. And our most clear, central view is 40-60Β°. cambridgeincolour.com/tut…
The Egyptian government opened the unusual Bent Pyramid to the public for the first time in decades in 2019. The design of the Bent Pyramid is considered unusual, as its first 49 meters are built at a steep 54 degree angle before tapering off in the top section dw.com/en/egypt-opens-ben…
Today I learned about a different angle of the Tacoma Narrows Bridge collapse discovered in February 2019. It shows the later stage of the collapse from the other side of Puget Sound as the more famous footage, and from a different perspective youtu.be/1jzUEG98erQ?t=34
Classical guitarists have several ways of trimming their plucking nails. There are various shapes and angles that influence ease of plucking and tone. classicalguitar101.org/cl…
Big Ben (Elizabeth Tower) in London is leaning over so much it can now be seen with the naked eye. In 4000 years it will be at the same angle as the tower in Pisa is now. metro.co.uk/2011/10/09/bi…
Howard Cater discovered Tutankhamun's body with a fully erect penis, standing upright at a 90 degree angle. Theories suggest it honours the fertility god Osiris. news.nationalgeographic.c…
Instead of moving their eyes, owls swivel their heads to view their surroundings. Owls' heads are capable of swiveling through an angle of roughly 270Β°, easily enabling them to see behind them without relocating the torso. en.wikipedia.org/wiki/Owl
The term dusk usually refers to astronomical dusk, or the darkest part of twilight before night begins. But there are actually three stages of dusk known as civil dusk, nautical dusk, and astronomical dusk. Each is based on the increasing angle of the sun below the horizon in the evening. en.wikipedia.org/wiki/Dus…
The Archaeological Ruins at Moenjodaro are the best preserved urban settlement in South Asia dating back to 2000 BC. Buildings are laid out along streets intersecting each other at right angles, in a highly orderly form of city planning that also incorporated systems of sanitation and drainage whc.unesco.org/en/list/13…
New reflective material possesses an interesting phenomenon: When white light shines on the film at night, some observers will see a single, stable color reflected back, while others will see changing colors. It all depends on the angle of observation and whether the light source is moving. phys.org/news/2019-08-ret…
A statue Mikhail Kalashnikov had to be altered with an angle grinder because it depicted him holding the wrong gun. bbc.com/news/world-europe…
The Rolls Royce Merlin V12 aviation engine created so much thrust from the exhaust, engineers were able to angle the exhaust backwards to gain 10 mph in the Spitfire it powered. en.wikipedia.org/wiki/Rol…
That Iran boycotted the 1980 Olympics in Moscow and the 1984 Olympics in Los Angles. nytimes.com/1983/08/02/wo…
The angle of the tail of the Yin Yang is the same as the tilt of the axis of the Earth chinesefortunecalendar.co…

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