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  • It's AumSum Time

  • Hey guys.

  • Hold on.

  • Did you download my app from Google Play Store?

  • Remember, it's called ''It's AumSum Time''.

  • Now, let's guess the title of my next video.

  • Because it likes to sizzle.

  • And 100 degrees Celsius.

  • Get ready water droplets.

  • Hurry up.

  • Write your guess in the comments section below.

  • Why are eggs egg-shaped?

  • Because they can't be AumSum-Shaped.

  • Tapered end means greater surface area to the bird's muscles.

  • That helps them to squeeze the egg out easily.

  • You guys look so cozy and warm.

  • This asymmetric shape fits the eggs tightly together.

  • What if the egg is nudged by mistake?

  • Let's see what happens.

  • Rolling Time.

  • Egg is rolling in a circle.

  • But, it stays safe.

  • Spherical Ball is rolling straight.

  • And there it goes.

  • That's why eggs are egg-shaped.

  • Topic: Osmosis.

  • Why is grass killed if salt is sprinkled on it?

  • Hey.

  • What are you doing?

  • Don't eat the grass.

  • Fine.

  • As always, ignore me.

  • See, I warned you earlier.

  • Hey wait.

  • You are making it worse.

  • Don't do that.

  • Look.

  • You spoiled it totally.

  • Alright.

  • Don't cry.

  • I will tell you why this happened.

  • This happened because of a concept called osmosis.

  • Osmosis is the diffusion or movement of water molecules.

  • From a region of higher concentration of water through a semipermeable membrane.

  • To a region of lower concentration of water.

  • Do you think osmosis took place when we sprinkled salt on the grass?

  • Bingo.

  • You are right.

  • Normally, osmosis does not take place on a day to day basis.

  • Because the grass tries to keep the concentration of water same inside

  • Outside its cells through the process of transpiration.

  • However, when we sprinkled salt on the grass.

  • The concentration of salt outside the grass increased and the concentration of water decreased.

  • As a result, the water present inside the plant started flowing outside due to osmosis.

  • Since most of the water flowed out, the grass drooped down and eventually, it died.

  • Topic: Human hair.

  • Why do we get white hair?

  • Because we cannot get blue hair.

  • No.

  • Our hair is basically made up of keratin, a colorless protein.

  • Hence, before our hair comes out of the skin, it is almost white.

  • How's that possible?

  • I had black hair during childhood.

  • Don't worry.

  • I'll explain!!

  • Our hair grows from hair follicles.

  • A hair follicle contains melanocytes which produce melanin.

  • Melanin is injected in the keratin cells during the growth of our hair.

  • This melanin gives color to our hair.

  • Now, the color of our hair is dependent on the type of melanin injected.

  • Eumelanin makes our hair black or brown while pheomelanin makes our hair red or blond.

  • However, as we grow old, the melanocytes decrease the production of melanin.

  • Thus, less melanin is injected in hair, causing them to eventually turn white.

  • Why pop rocks pop?

  • Because they have springs in their legs.

  • No.

  • Pop rocks are tiny candy crystals.

  • Candies are usually made using sugar, water, corn syrup, various flavorings, etc.

  • Initially, all these ingredients are mixed together.

  • The resulting solution is heated until most of the water boils off.

  • We are left with a thick sticky syrup.

  • Usually, this syrup is poured in moulds and allowed to cool and harden to make candies.

  • However, to make pop rocks, highly pressurized carbon dioxide gas is added to the syrup.

  • Then, it is cooled to subsequently form a hard candy.

  • This results in the formation of small bubbles of pressurized carbon dioxide trapped inside the candy.

  • Now, when we put this candy in our mouth, our saliva dissolves the candy.

  • As a result, the highly pressurized carbon dioxide escapes from the bubbles with a pop.

  • Why are some people always cold?

  • We human beings generate heat in our body during muscle movement, metabolism, etc.

  • Most of this heat is used to maintain our body temperature and keep us warm.

  • However, some people always feel cold.

  • This might be because they are suffering from hyperthyroidism.

  • In hyperthyroidism, our thyroid gland which regulates metabolism does not function properly.

  • As a result, our metabolism slows down and less heat is generated due to which we feel cold.

  • Another possibility is a disorder called Raynaud's disease.

  • When a person having this disorder is stressed or is exposed to cold conditions.

  • The arteries of his hands and legs become narrow.

  • Hence, warm blood is not transported efficiently to his hands and legs, making his extremities feel cold.

  • In addition to this, less muscle mass, low iron levels.

  • Smoking may also make some people always feel cold.

It's AumSum Time

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B2 中高級 美國腔

為什麼雞蛋是蛋形的?| 雞蛋的形狀是什麼? (Why are Eggs Egg-shaped? | #aumsum)

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    AumSum 發佈於 2021 年 01 月 14 日
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