How does a fly manage to walk on the ceiling? Detailed answer

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How does a fly manage to walk on the ceiling? Detailed answer

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How does a fly manage to walk on the ceiling?

For all its harmfulness, the fly is an amazing creature. An ordinary small housefly has two large brown eyes, each of which, in turn, consists of a thousand lenses. These eyes are called "compound". In addition to them, on the top of the head, the fly has three more "simple" eyes, looking straight up and distinguishable only with a magnifying glass.

The palps (or antennae) of the housefly are used as organs of smell, not as organs of touch. Antennae are able to detect smells at a great distance.

The mouth of a fly is formed from an organ that we used to think of as a tongue, but in this insect, all parts of the mouth are brought together into a long proboscis, with which the fly sucks in juice. The body of a fly is divided into three parts: head, thorax and abdomen. Behind the wings are two small bulges that allow the fly to balance in flight. Three pairs of legs are attached to the striped breast. Each leg is divided into five parts, the last of which is the foot.

The fly walks on two claws located on the bottom of the foot. The sticky pads under these claws allow the fly to walk on the ceiling or anywhere else upside down with great ease! Did you know that the whole life of a fly passes within a radius of 100 m from the place where it was born?

Author: Likum A.

Random interesting fact from the Great Encyclopedia:

What weighs more - the food consumed by a person per day, or the air that he inhales over the same period of time?

The weight of air inhaled and exhaled by a person during the day is easy to calculate.

With each breath, a person introduces about half a liter of air into their lungs. This is done on average 16 times per minute. This means that in one minute about 8 liters of air manage to visit the body. This is approximately 480 liters per hour, and 11 liters per day. This volume of air at normal pressure weighs about 500 kilograms.

Thus, per day, a person passes through his body much more air than food: on average, during this time, the body consumes about 3 kilograms of food (solid and liquid). However, if we take into account that the inhaled air consists of 4/5 nitrogen, which is useless for breathing, it turns out that the daily weight of its remaining components is approximately equal to the daily weight of the food consumed.

The given estimates are a convincing argument in favor of the need for fairly frequent air renewal in a residential area.

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