10 things you think you know aren’t actually true

A man is amazed by his mind blown

Nobody has time to consider everything, so people often have to take some things that we know as general knowledge for granted. Unfortunately, not all of the information you pick up along the way is factual. Read on until 10 of your beliefs are disproved.

chimpanzees in nature

Myth #1 – Chimpanzees have more hair than humans

If you put a picture of a chimpanzee next to a picture of a human, you’ll be forgiven if you think a chimpanzee is more hairy. However, this is not the case. Humans have between two and five million hair follicles scattered around their bodies, which is about the same number as other primates. Our hair is less coarse and less noticeable. While primates have fur, humans have two types of hair: terminal hair and downy hair. Final hairs make up the hair on our heads and in the armpits and pubic area, and vellus hair is everywhere else. The vellus hair is finer, shorter and lighter than the terminal hair, and is not connected to any subcutaneous glands. No one knows for sure why we evolved this way, but it’s possible[1] that when our ancestors moved from shady forests to hot savannas, they grew this type of hair as a way to protect their brains while keeping their bodies cool – by sweating – while hunting and foraging in the sun.

Earth Sun Moon

Myth #2 – The Earth revolves around the Sun

Strictly speaking, the Earth revolves around the center of mass of the solar system, also known as its bare center[2]. This is the equilibrium point around which the combined mass of every object in the solar system is evenly distributed. Due to the constant movement of the planets, this point is always changing. Since the Sun contains more than 99% of the total mass of the Solar System, the Solar System’s second center is located near its surface, sometimes within the Sun itself. But when the center of gravity is outside the sun, our planet orbits around an empty spot in space.

rice smartphone

Myth #3 – A wet phone should be put in rice

The belief that rice will dry out a wet phone is perfectly reasonable – after all, rice is known to absorb moisture. However, despite what you may have heard, experiences[3] She showed that rice would not only help, but would likely run more slowly than fresh air. In fact, rice may do more harm than good; The grains can get stuck in headphone jacks or charging ports, and the starch in rice may speed up the corrosion process. Alternatively, leave the phone to dry in an area with some airflow, or if you don’t want to wait a week or two, you can try using things[4] Such as silica gel bags or vacuum bags.

Traffic on busy highways

Myth 4: Widening highways helps traffic

When you’re stuck in traffic, it’s easy to imagine how fast you might be able to go if only someone had the foresight to add more lanes to the highway you are on. but search[5] He shows that expanding a highway often only leads to worse traffic problems, thanks to a phenomenon known as “induced demand,” which describes how an increase in supply leads to a decrease in price and therefore an increase in consumption. In the case of roads, adding capacity reduces travel time, which reduces the ‘price’ of driving and leads to more miles being driven as people who don’t currently use a car decide to drive. So new lanes fill up very quickly and traffic is choking again.

A good example of this influence is the Katy Highway in Houston. In 2011, this highway was expanded to a whopping 23 lanes, making it the widest in the world, but travel times actually increased during morning and evening commutes by 30 percent and 55 percent, respectively.[6]

Mount Everest in Nepal

Myth #5 – Mount Everest is the highest mountain in the world

At 29,035 feet (8850 meters) from its base to its summit (plus or minus 6.5 feet/two metres), Mount Everest is generally considered the highest mountain in the world. But that depends on your definition of “higher”.[7]

If you define the highest as “closest to the moon,” the honor should go to Mount Chimborazo in Ecuador. The thing is, the Earth isn’t a round sphere, it just bulges out in the middle, much like one of those spherical chairs that are comfortable when someone sits on it. From base to summit, Chimborazo is 20,548 feet (6,263 meters) high. But it also sits on a bulge on a larger portion of the Earth’s bulge than Everest, which means it’s actually 35,826 feet (10,920 metres) from the center of the Earth.

And if you define “highest” as the tallest mountain from base to summit, then the award for “highest mountain” should go to Mauna Kea in Hawaii: it’s more than 32,808 feet (10,000 meters) high from its base in the Pacific Ocean to its peak, which is nearly One mile longer than Everest.

NASA astronaut Drew Feustel ISS Crop

Myth #6 – There is no gravity in space

We’re all familiar with photos of astronauts cruising around the space station, so it’s easy to believe there’s no gravity there. But gravity is everywhere in the universe – without it, everything would simply disintegrate and cease to exist. The reason astronauts on the space station seem weightless is because both the space station and the astronauts are in a constant state of free fall toward Earth. Since objects of any mass fall at the same speed, the space station and astronauts fall together, creating the illusion of zero gravity. Fortunately, although they kept falling, they never fell to Earth because the space station is traveling at about 17,150 miles (27,600 km) per hour, which keeps it and the astronauts in orbit.

Electricity spark plug concept

Myth #7 – Water conducts electricity

While it may be true that dropping a toaster in your bathroom won’t end well for you, the truth is that pure distilled water is a bad conductor.[9] of electricity because its molecules do not have free electrons to transmit electric current. Pure water consists of an oxygen molecule chemically bonded to two hydrogen molecules. Oxygen has six electrons in its outer reactive shell and space for two more, and hydrogen atoms have one electron each, which means a perfect chemical bond.

However, water is considered a super solvent; Ions free from impurities such as salts and minerals dissolved in water enable it to conduct electricity. Interestingly, when water contains a large amount of these ions, it conducts electricity so well that electricity will ignore less efficient conductors – such as human bodies – and stick to the better path; Lots of ions in the water.

double rainbow in nature

Myth #8 – There are seven colors in the rainbow

ROY G BIV is a lie dating back to Sir Isaac Newton and his superstitious beliefs. Unlike his contemporaries, Newton believed that pure, white sunlight consisted of all the colors of the spectrum. He demonstrated this in the 1660s in a series of experiments that broke sunlight through a prism, splitting it into smaller wavelengths. At first, Newton saw only five colors. But he believed in the ancient Greek mathematician Pythagoras’ view of a harmonious universe in which the number 7 was a magic number connecting all kinds of natural phenomena, from celestial bodies (seven of which were known at the time) to the musical scale. . So, when Newton published the original color wheel in 1704, he added orange and indigo to the colors he had already identified.

However, what we call color is perceived by our minds. The spectrum of light contains a continuous distribution – and thus an infinite number – of colors, and the colors we see depend on how well each of the cone-shaped photoreceptors in our eyes that see red, green and blue are stimulated. So the colors of the rainbow may vary from person to person.

Qwerty Keyboard

Myth #9 – A QWERTY keyboard is designed to prevent keys from jamming

Contrary to what you may hear, the QWERTY keyboard may not have finished with its current design because the inventor was trying to ensure that the mechanical keys on the typewriter wouldn’t jam, by placing the most frequently used characters as far apart as possible. Instead, according to Kyoto University historians Koichi Yasuka and Motoko Yasuka, its current design dates back to 19th century American Morse code.[11] This is because, when the keyboard layout was designed, the primary users of typewriters were telegraph operators who needed to transcribe messages written in Morse code as quickly as possible, so the characters they used often were placed where they could easily access them.

Palying bagpipes

Myth No. 10 – Scottish bagpipes

no, they’re not. Although bagpipes may now be synonymous with the Scottish Highlands, it likely originated in the Far East.[12] Ancient references to bagpipes have been found in both Turkey and Egypt. A possible figurine of bagpipes, dating from 1000 BC, was found on a Hittite tablet at Euyuk in Anatolia. A more substantial link referring to an ancient Egyptian bagpipe made of dog skin and bone was documented by the Greek playwright Aristophanes in the fifth century B.C. in his work “The Assyrians”, in which he wrote: Pipes blow a dog’s rear.

However, the first notable enthusiast was the Roman emperor Nero, who even minted a coin showing himself playing the bagpipe. He used to play it to inspire his troops before battle. There are many theories about how bagpipes came to Scotland from their original hometown, but one of the most popular (and plausible) is that the Romans brought it with them when they invaded Britain.

Mind flew!

References:

  1. Discovermagazine.com/planet-earth/why-humans-lost-their-hair-and-became-naked-and-sweaty
  2. businessinsider.nl/animation-reveals-invisible-center-of-solar-system-not-sun-2020-7/
  3. protectyourgadget.com/blog/myths-debunked-using-rice-to-dry-a-wet-phone/
  4. bestlifeonline.com/wet-phone/
  5. gizmodo.com/why-expanding-highways-makes-traffic-worse-1842220595
  6. cityobservatory.org/reducing-congestion-katy-didnt/
  7. npr.org/2007/04/07/9428163/the-highest-spot-on-earth
  8. sitn.hms.harvard.edu/flash/2018/free-falling-the-science-of-weightlessness/
  9. usgs.gov/special-topics/water-science-school/science/conductivity-electrical-conductance-and-water
  10. en.99designs.nl/blog/tips/why-are-there-7-colors-rainbow/
  11. hackaday.com/2016/03/15/the-origin-of-qwerty/
  12. hendersongroupltd.com/resources/history-of-bagpipes/

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