Dưới đây là danh sách các quan niệm sai lầm phổ biến. Các mục trong bài viết này truyền đạt sự thật, còn bản thân các quan niệm sai lầm chỉ được ngụ ý.
Some Muslim women wear niqabs, which are often confused with the burka.
Dogs do not sweat with their tongues as most people believe. They do have some sweat glands, but the ones of most importance are on the pads, or soles, of their feet.
Of course, dogs sweat. You would, too, if you had to wear a fur coat in hot weather. Dogs excrete moisture through the pads on their paws.
It is another folk tale that dogs do not sweat except through the tongue. This is an incorrect belief as dogs possess sweat glands all over the body.
SOME time ago we received from a correspondent an inquiry as to whether the very prevalent belief that a dog perspires through the tongue was a vulgar error or well founded....whether the dog exudes fluid from the tongue of the some kind as that exuded from the human skin. To this question the answer is, No. The skin of the dog is abundantly furnished with glands, having the characteristic disposition and structure of those which in man produce sweat,... in other words, the dog does not sweat by the tongue.
Many people are under the misconception that the flower heads of the cultivated sunflower (Helianthus annuus) track the sun... Immature flower buds of the sunflower do exhibit solar tracking and on sunny days the buds will track the sun across the sky from east to west... However, as the flower bud matures and blossoms, the stem stiffens and the flower becomes fixed facing the eastward direction.
Dinural E-W oscillations of the heads occurred initially but ceased as the flowers opened and anthesis commenced, leaving the heads facing east
If you don't try to hold your breath, exposure to space for half a minute or so is unlikely to produce permanent injury. Holding your breath is likely to damage your lungs,... but theory predicts – and animal experiments confirm – that otherwise, exposure to vacuum causes no immediate injury. You do not explode. Your blood does not boil. You do not freeze. You do not instantly lose consciousness
...will we humans explode in the full vacuum of space, as urban legends claim? The answer is that we won't explode, and if the exposure is short enough, we can even survive.
[...T]here's little evidence that detox diets actually remove toxins from the body. Indeed, the kidneys and liver are generally quite effective at filtering and eliminating most ingested toxins.
Most parents assume that children plus sugary foods equals raucous and uncontrollable behaviour. ... according to nutrition experts, the belief that children experience a 'sugar high' is a myth.
It's the old myth heard time and again about how people use only ten percent of their brains
Part of the process of becoming a mathematics writer is, it appears, learning that you cannot refer to the golden ratio without following the first mention by a phrase that goes something like 'which the ancient Greeks and others believed to have divine and mystical properties.' Almost as compulsive is the urge to add a second factoid along the lines of 'Leonardo Da Vinci believed that the human form displays the golden ratio.' There is not a shred of evidence to back up either claim, and every reason to assume they are both false. Yet both claims, along with various others in a similar vein, live on.