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  • It's AumSum Time

  • Hi guys.

  • Can you guess the title of my next video?

  • Hurry up.

  • Write your guess in the comments section below.

  • How tattoo removal works?

  • With the help of waxing strips.

  • No.

  • A permanent tattoo consists of various colored particles.

  • It can be removed with the help of lasers.

  • Lasers emit light of different wavelengths.

  • The colored particles absorb these wavelengths of light, get heated up and break into smaller pieces.

  • Making it easy for immune cells to eat and excrete them out, thus removing the tattoo.

  • Now, since every color absorbs a specific wavelength more than the other.

  • Different colors need different laser wavelengths.

  • Black color is easiest to remove because it absorbs almost all wavelengths.

  • Breaks into smaller pieces.

  • However, other colors like red, green, orange, blue, etc. require special lasers.

  • Can pure oxygen kill you?

  • No idea.

  • The air we breathe has many gases out of which 21% is oxygen.

  • When we inhale, much of the oxygen present in air binds to the hemoglobin in red blood cells.

  • Is transported to various cells where it helps to produce energy.

  • However, some inhaled oxygen also turns into free radicals.

  • Free radicals are highly unstable and can be harmful.

  • Hence, our body produces antioxidants that neutralize the free radicals.

  • But if we inhale pure oxygen for a long time, then the number of free radicals increases.

  • It becomes difficult for the antioxidants to neutralize them.

  • Hence, these unstable free radicals begin to bind with proteins in red blood cells.

  • Change their chemical structure.

  • As a result, our immune system doesn't recognize the red blood cells and begins to kill them.

  • Besides this, free radicals even damage the DNA which can lead to cancer.

  • What makes ice clear or cloudy?

  • At home, we generally use room temperature tap water to make ice.

  • At room temperature.

  • Water has many dissolved minerals, gases, etc. which are invisible to our naked eyes.

  • On freezing this water, its temperature starts dropping and ice starts to form from outside.

  • Hence, the minerals and gases no longer remain dissolved.

  • But, as they cannot escape out, they get pushed towards the unfrozen center.

  • Eventually, when the center freezes, the trapped minerals and gases become visible.

  • Making ice cloudy.

  • Will it rain from the cloudy ice?

  • Just listen.

  • Now, to avoid this situation, some specialized ice makers make ice slowly layer by layer.

  • In this technique, water is made to continuously flow over the surface of a cool container.

  • Thus, water begins to freeze from the bottom of the container, layer by layer.

  • Giving the minerals and gases time to escape from the top, making ice clear.

  • Topic: Snoring.

  • Why do we snore?

  • I don't snore.

  • I sing.

  • Alright.

  • Now let me explain.

  • Snoring is a noisy rattling sound occurring during sleep.

  • Oh really.

  • I thought snoring is a pleasing piano sound.

  • Please listen.

  • Snoring is basically caused due to obstruction of air in our respiratory tract during breathing.

  • When we breathe.

  • We take in air through nose or mouth which then passes down the throat into the lungs.

  • Normally, when we aren't asleep.

  • Our mouth parts like soft palate and uvula keep this tract wide open, allowing air to pass easily.

  • However, excess growth of soft palate and uvula in some people causes snoring.

  • So, when these people sleep, these parts fall on the back of their throat, creating an obstruction.

  • Hence, when they inhale, the air hits these parts making them vibrate, which we hear as snoring.

  • Why do cats purr?

  • To keep their voice melodious.

  • No.

  • According to a popular belief, people think that cats purr when they are happy and satisfied.

  • But did you know that cats purr in other situations also?

  • Imagine a cat falls from a height and injures her bone.

  • In such a situation also, the cat starts purring to heal her bones.

  • Purring.

  • To heal the bones.

  • But how's that possible?

  • It is found that exposure to frequencies between 20 Hertz and 50 Hertz builds bone density.

  • The frequency of a cat's purr falls within the range of 25 Hertz to 150 Hertz.

  • So, it is possible that a cat who has injured her bone might be purring to build bone density.

  • Thus, promote healing.

  • That's awesome dude.

  • In addition to this, cats also purr when they are stressed or feeling very hungry.

It's AumSum Time

Subtitles and keywords

B2 H-INT US purr snoring ice hertz purring cat

How Tattoo Removal works? | #aumsum

  • 36 0
    Amy.Lin   posted on 2019/04/11
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