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I bet you believe one of these things (but you shouldn't).
There are a number of scientific myths scattered about some basic principles. While most of them have been refuted years ago, these rumors simply won't go away. See 10:
It is true that there is a great deal we do not know about the brain, but we certainly know that we use its full capacity. Even though we don't have a wealth of brain imaging data to show, this 10% value is completely false. If we think about it, this number doesn't even make much sense.
Although the brain weighs in at around 1kg, it is extremely energy demanding, which requires about 20% of all the oxygen and glucose you put into your body. Therefore, it is extremely unlikely that the brain has so much “useless” space as it consumes so much energy.
And there's another one. You've never heard of anyone who has been diagnosed with a brain tumor, but has heard something like, “Great news! The tumor is in a part of the brain you don't use! ” Huh?
Brain trauma also often has devastating results and very few survive head gunshot wounds, and not without some very serious sequelae.
While you can't use every bit of your brain at all times, the truth is that you use your whole brain throughout the day. Feeling like someone who is not up to your full potential is a different matter, but that still doesn't mean that you are not using your entire brain every day.
Oh, Pink Floyd, you misled us.
From our perspective on Earth, we are able to see about 59% of the moon's surface (though not all at the same time). The other 41% are completely hidden from this point of view. So this part must be shrouded in darkness and freezing, never to feel the warmth of the sun again, right? Do not.
This confusion happens due to the blockage of tides, which makes it seem as if the moon is not turning. The moon, in fact, is spinning very slowly, completing a rotation at the same time as it takes a spin around the earth. While one side (more or less) is always protected from the earth, it has nothing to do with the amount of sunlight it receives.
After all, we have different phases of the moon.
Except in the case of a lunar eclipse, sunlight shines on half the moon (just as each half of the earth receives daylight at one time) all the time. When the sun fully illuminates one side of the moon, we call it a full moon. When parts or all of the moon seems to be missing in the sky, some or all of the sunlight is falling from the side of the moon that we cannot see. While it is definitely not a region we might call "the other side of the moon," it is no more or less dark than the side we can see.
This has been a longstanding myth, particularly among people who work with the elderly or people with mental disabilities. Many believe that the full moon would be an explanation for some people's strange behavior.
This myth has a wide variety of causes, including assumptions that water in the brain is affected by the gravitational forces of the moon. Many people claim that violent crime increases during periods of the full moon, and even UK police stations are forewarning by increasing staffing on these dates.
The subject has been studied many times, and there is a very limited correlation between the full moon and the increase in people's erratic behavior - and certainly no causal link has been discovered. While some studies do indeed show increased crime during the full moon, this is typically explained by coincidentally when the full moon falls on a holiday or weekend. Therefore, we need not fear werewolves.
Going to a kids' party where a sweet cake, free ice cream and heavily sugary drinks, and lots of goodies are served makes anyone think that this heavy diet is to blame for leaving children in that state of hyperactivity.
But there is not much evidence to suggest that all this energy has anything to do with high sugar intake. The explanation may be enthusiasm for the event or simply being around other children. It is also possible that other ingredients, such as caffeine, are to blame.
This is not to say that sugar intake should not be limited in children. Too much sugar is associated with weight gain, insulin resistance, hypertension and even an increased risk of certain cancers.
This is even a term commonly used to say that something bad has happened once but cannot happen again. Unfortunately, it has nothing to do with actual lightning strikes.
Lightning strikes are a huge electrostatic discharge looking for a way down, and they are not particularly interested in whether that path has been traveled before by a colleague or not.
Taller objects, such as trees and skyscrapers, are usually common targets, because there is a shorter distance between these objects and the origin of lightning. The tallest tree in a forest can be hit several times until the storm passes. In fact, lightning strikes the Empire State Building, an iconic New York City building about 100 times a year.
NASA released a study in 2003 involving 386 lightning strikes that found that a third of the lightning struck and struck at several locations at the same time. That is: not only does a lightning strike fall twice in the same place, it can also fall in two places at once!Continues after advertising
If you hurl a penny from the top of a tall building down the sidewalk, many people believe you will kill someone. But not. Pennies are very light and lousy (or, in this case, good) in terms of aerodynamics. So as it falls, its low mass and relatively low terminal speed (105 km / h) would not do much harm to a person on the sidewalk. He would feel as if he had hit his head, but nothing serious. And certainly not lethal.
However, if you play items that are more massive or more aerodynamic, their mass would increase the object's terminal velocity and could do a bit of damage, yes.
It is no coincidence that construction sites require helmets in order to protect workers from loose rocks or bolts that accidentally fall from great heights.
For nails and hair to continue to grow after someone is killed, one would still need to eat and digest nutrients by performing cellular processes. Of course, this would interfere with the process of being dead. Therefore, there is no way for the body to continue producing more keratin in order to grow hair and nails.
However, skin and hair may appear to grow in the dead. It is a matter of point of view.
As dead skin begins to dry, it shrinks and moves away from hair and nails. Hair and nails are unaffected by lack of moisture and do not shrink, which can make them look as if they have grown.
It also makes well-shaved men appear to have long beards. Many funeral homes apply moisturizer after the corpse is washed in order to reduce the amount of drying before memorial service.
This seems to make a lot of sense, but the studies that have been done on the subject have not been able to show a connection between the two. In 1998, Donald Unger published an article showing that he had snapped his left hand fingers every day for 60 years, but not those of his right hand. There was no difference in joint health between the two hands, and Unger received the Ig Nobel Prize in Medicine in 2009 for his work.
Synovial fluid is a substance that acts as a cushion and reduces friction in synovial joints such as fingers, elbows, knees and hips. When the joints are stretched and the joint capsule separates, decreasing pressure inside the capsule releases gas, forming a bubble to compensate for dead space. Therefore, pressing your joints can make a loud sound as if bubbles are being burst.
If these crackles are associated with pain, it may indicate damaged joints - and you might want to stop even with this habit. The snap can also come from tendons, which can reduce their strength over time.
Chewing gum does not take seven years to digest. In fact, you don't even have to digest them. Apart from a small amount of sweeteners and flavorings, there is not much there that the human body really needs to break down and use.
Most of the gum is made of rubber polymers known as elastomers, along with vegetable and glycerin oil-based ingredients to keep the gum soft and moist. Once the body has extracted as little as it can from the gum, the rest is passed on like trash to get out of our body, like anything else.
However, that does not mean that swallowing gum is a great idea. Ingesting large amounts of chewing gum can cause constipation and gastrointestinal obstruction, and then you will need a doctor to remove this dirt from inside you.
Gum can also fuse with other non-digestible items in the digestive tract such as coins, small toys, sunflower seeds and so on. This combination may contribute to a gastrointestinal block or injury.
This myth appears throughout the cold and flu season. Antibiotics, by their very definition, kill bacteria. And only them. The cold and common flu are caused by viruses and are not affected by the use of antimicrobials.
While some may think that taking antibiotics could be helpful at some level to cure a viral disease, this is absolutely wrong and could actually bring more problems. Taking antibiotics contrary to their intended purpose or dosage instruction can cause other common bacteria within the body to become drug resistant, which can be quite critical. For example, it could create “superbugs” that cause far worse disease than we might expect.