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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''.

  • And follow my Facebook page.

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

  • Muahahaha.

  • Because I told it to do so.

  • Oh.

  • Because of the flame, the air around the candle is hot.

  • Rise hot air, as you are lighter.

  • Hurry up.

  • Write your guess in the comments section below.

  • Do bees dance?

  • Yes.

  • I'm always invited.

  • Nectar-producing flowers.

  • C'mon.

  • Time to tell the otherrs.

  • Gather around everybody.

  • It's time for the waggle dance.

  • It looks like the figure 8.

  • Longer the dance, farther the flowers.

  • But, which direction dude?

  • The sun is here.

  • So, this is the direction of the flower with respect to the sun.

  • Let's go.

  • Topic: Rancidity

  • Why is a bag of chips half full?

  • Looks like you don't believe me.

  • Open the bag.

  • See I told you.

  • The bag of chips is indeed half full.

  • Why is that so?

  • It is mainly because of a concept called rancidity.

  • When food becomes rancid.

  • It develops an unpleasant smell and taste and it becomes unsafe for consumption.

  • Rancidity generally refers to a condition where the fats and oils present in food get oxidized

  • Resulting in food spoilage.

  • Since the chips contain fats and oils, they are likely to get rancid.

  • Therefore, to prevent this, nitrogen gas is flushed into bags of chips by manufacturers.

  • But, why nitrogen?

  • Nitrogen does not react with fats and oils.

  • As a result, rancidity does not take place.

  • Moreover, a gas in the bag serves as a cushioning agent and prevents the chips from crumbling.

  • That is why the bag of chips is only filled till half.

  • Topic: Air pressure.

  • How do straws work?

  • They work very hard.

  • No.

  • Straws work because of air pressure.

  • Is it similar to acupressure?

  • No.

  • Air pressure is the weight of air pressing down on earth and all other objects present on it.

  • Now, when a straw is in a liquid.

  • The air pressure upon the liquid in the glass and the air pressure upon the liquid in the straw is similar.

  • Causing the levels of liquid to be almost equal.

  • However, when we drink the liquid through straw.

  • We first inhale causing the air from the straw to flow into our lungs.

  • Now due to absence of air, the air pressure in the straw decreases.

  • Hence, the air pressure present on the liquid of the glass pushes the liquid into the straw.

  • Causing it to move upwards and thus, helping us drink.

  • Why do bees build hexagonal honeycombs?

  • I don't know.

  • Honeybees build honeycombs to store honey, pollen, eggs, etc.

  • The honeycombs are built using beeswax which honeybees produce themselves.

  • However, honeybees produce very less amount of this wax.

  • Hence, honeybees required a shape that would give them maximum storage using minimum beeswax.

  • Now, if each cell of the honeycomb would be a circle.

  • Then there would be a lot of gaps or wasted space between cells.

  • So why didn't honeybees make triangular or square cells?

  • These shapes don't leave any wasted space.

  • Popular research suggests that hexagonal cells use less wax.

  • Provide more space as compared to triangles and squares.

  • This means honeybees can store more honey while using the least amount of wax.

  • Besides this, the overall structure is much more stable and strong.

  • Why do our muscles get sore?

  • Because they want to go to a spa.

  • No.

  • When we begin to go to gym or perform a new intense physical workout.

  • Our muscles begin to feel sore the next morning.

  • This soreness is called Delayed Onset Muscle Soreness or DOMS.

  • DOMS occurs usually after eccentric contractions.

  • What does that even mean?

  • When a muscle is lengthening and contracting at the same time, it is known as an eccentric contraction.

  • For example, when we lower a dumbbell, our biceps muscle is slowly relaxing and lengthening.

  • But at the same time, it is still contracting to hold the heavy weight of the dumbbell.

  • Similarly, in a squat, as we lower ourselves, our quadriceps muscle is lengthening.

  • But at the same time, it is still contracting to hold our upper body weight.

  • Such eccentric contractions generate tension in the muscles, creating minute tears in them.

  • Thus, causing the soreness or pain.

It's AumSum Time

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B1 中級

蜂は踊る?| 蜂は踊るのか? (Do Bees Dance? | #aumsum)

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    AumSum に公開 2021 年 01 月 14 日
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