WHY doesn’t food burn in oil?

When frying in a pan without oil, the food only gets hot at the bottom and the top is not heated, being completely soggy. The oil gives off heat from the lower layers to the upper ones.

The boiling point of oil gives the crust to the food, but you can’t get it with cooking, water interferes in the process, it adjusts to its boiling point, which is lower than that of oil.

 

WHY is a business class located in the front of the plane if it’s safer in the back?

The probability of surviving a crash in the back of a plane is not much higher than in the front seats, only a few percent. Considering that plane crashes are rare (once per million flights), this difference can be neglected.

More important are the advantages of the front seat: quick landing and disembarkation, lower noise level and the view from the porthole, which is not obscured by the wing and the engines.

 

WHY don’t mice like cheese?

Contrary to popular myth, mice are not as big a fan of cheese as they are often portrayed in cartoons and even movies.

The basic diet of mice, like other rodents, consists of grains, seeds, pieces of vegetables, fruits and sweets. In addition, many kinds of cheese have a pungent odor that is more likely to scare away a mouse.

 

WHY does the skin on fingers get wrinkled in water?

Our distant ancestors used to extract from water bodies not only food but also household items. No special equipment was available, so they had to do it with their bare hands.

Skin wrinkling on palms and fingers made the task a lot easier and changing the skin on feet simplified moving over underwater rocks and other slippery surfaces.

 

WHY is the limescale in the kettle not considered harmful to humans?

If a person swallows some scale, he or she will only get an unpleasant feeling in the mouth. Limescale is mainly calcium and magnesium salts, physiologically inactive due to their insolubility.

However, these layers do not conduct heat well: settling on the heater, they increase the boiling time of water and are harmful only to the kettle itself.