Why?

2021-11-05 14:00:06 WHY is the temperature on the thermometer set at 42° C?

Have you ever boiled an egg? After a few minutes of boiling, the protein curdles, becomes dense and white; this process is called denaturation.

At 42°C, the body also starts denaturing (clotting) blood proteins.

Furthermore, at this temperature, metabolic disorders begin in the brain. Such a condition is already incompatible with life, i.e. fatal. Открыть/Комментировать

2021-11-04 18:00:07 WHY do we put out fire with water?

Water, sand, foam, and anything else that puts out a fire cuts off the oxygen to it.

The substances thus cover the burning area and stop the chemical process. Besides, water has a high heat capacity and heat of evaporation. It cools the burning material and slows down the release of combustible gases. Открыть/Комментировать

2021-11-04 14:00:04 WHY does audibility improve after it rains?

During and after rain, sound travels best due to little dust and other particles in the atmosphere that absorb and weaken sound waves.

Yet, during fog, when the atmosphere is full with water, audibility gets worse. Открыть/Комментировать

2021-11-03 22:00:01 WHY do dogs wag their tails?

Under their tails, dogs have a gland responsible for their individual scent.

Dogs wag their tails when they want to show their affection and spread their scent as much as possible. On the contrary, they do the same movement when frightened. Открыть/Комментировать

2021-11-03 14:00:02 WHY do pirates wear a black eye patch?

A black eye patch helps rapidly get accustomed to changing light.

Not only pirates wore such blindfolds. Any sailor who needed to go down in the hold frequently wore an eye patch.

The ocean, reflecting sunlight, blinded the eyes, but it was truly dark in the holds. The sailors kept one eye in constant darkness, though when they went down into the hold, they opened it and saw well at once. Открыть/Комментировать

2021-11-02 21:00:04 WHY are the auroras multicolored?

During collisions, atmospheric atoms can lose electrons (ionize) or turn into an excited state for a short time. Photons with different wavelengths are emitted, which is what the human eye or camera sees.

Oxygen is responsible for the green or brownish-red color, as well as the greenish-yellow polar lights. Other constituents of the atmosphere also make small contributions, such as hydrogen and helium giving blue and purple colors. Открыть/Комментировать

2021-11-02 14:00:07 WHY does chocolate make you feel good?

The fact that chocolate contains a substance called the hormone of happiness, tryptophan. It significantly boosts your mood.

Even when treating depression, doctors advise eating more chocolate. Открыть/Комментировать

2021-11-01 21:00:03 WHY do restaurants give mint gum to customers?

The staff is not trying to hint at customers' stale breath in this way, as it may seem at first

The idea is to take care of digestion. Peppermint soothes the smooth muscles of the gastrointestinal tract. Products containing mint can eliminate heartburn, feelings of bloating and overeating.

The restaurant is interested in making you feel great after your meal. Открыть/Комментировать

2021-11-01 20:00:07 Sick Science! is an author channel with gorgeous pictures!

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2021-11-01 19:32:13 Открыть/Комментировать