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  • It's AumSum Time

  • Hi guys.

  • Can you guess the title of my next video?

  • Something's missing.

  • Sugar?

  • Salt?

  • No.

  • It's saliva.

  • Hurry up.

  • Write your guess in the comments section below.

  • How many brains do you have dude?

  • No.

  • Just one.

  • An octopus has a decentralized nervous system with majority of its neurons residing in its arms.

  • These neurons help the arms to independently taste, touch and control basic motions.

  • Without consulting the actual brain in its head.

  • Thus, it gives an impression of having 9 brains, when in reality, it only has one.

  • Topic: Nuclear fusion.

  • Why is nuclear fusion not used to generate electricity?

  • You really want to know the answer to this, right?

  • But wait.

  • Before answering the question, let us understand what is meant by nuclear fusion.

  • When two lighter nuclei combine to form a heavy nucleus, a large amount of energy is released.

  • This process is called nuclear fusion.

  • Where does this nuclear fusion take place?

  • You think that it takes place in a laboratory?

  • No, you are absolutely wrong.

  • Nuclear fusion takes place in the sun.

  • The nuclei of two hydrogen atoms join together to form a heavy nucleus of helium.

  • With the release of a large amount of energy.

  • How do you think this energy reaches us?

  • No.

  • It does not reach us through power lines.

  • Wait, I will tell you.

  • The energy released after nuclear fusion reaches us in the form of sunlight, ultraviolet radiations, heat, etc.

  • Hey.

  • But we are already producing electricity with the help of nuclear fission.

  • So, why do we require nuclear fusion?

  • For this, you need to first understand the difference between nuclear fusion and nuclear fission.

  • As we already know,

  • Nuclear fusion is the fusion of two lighter nuclei with the release of a large amount of energy.

  • The exact opposite process happens in nuclear fission.

  • Here, a heavier nucleus splits into two lighter nuclei, releasing a large amount of energy.

  • This process of fission is used in nuclear power plants.

  • Where a heavy nucleus of uranium is split into lighter nuclei.

  • The energy that is released in this is used to generate electricity.

  • However, there is a major disadvantage of nuclear fission.

  • Wondering what it is?

  • The major disadvantage is that uranium is a radioactive element.

  • When uranium undergoes fission, it generates radioactive waste along with energy.

  • This radioactive waste is very harmful for most lifeforms and the environment.

  • Hence, we need to find a clean and safe source of energy to generate electricity.

  • What source would that be?

  • Would it be nuclear fusion?

  • You are right.

  • Then why are we not harnessing the energy of nuclear fusion to produce electricity?

  • This is because, for nuclear fusion, two conditions are required.

  • They are high pressure and high temperature.

  • Only when these conditions are met, can the two nuclei travel at very high speeds resulting in collision.

  • On earth, it is extremely difficult to create such high pressure and temperature.

  • Even if we are somehow able to create these conditions, the question is how will we control them?

  • As there are many questions unanswered and unsolved.

  • We have not yet succeeded in using nuclear fusion in the production of electricity.

  • Topic: Human tears.

  • Why do onions make you cry?

  • Because they cannot crack a joke.

  • No.

  • Onions consist of amino acid sulfoxides.

  • When we cut an onion, millions of onions cells rupture.

  • Releasing the amino acid sulfoxides along with some special enzymes.

  • These special enzymes react with amino acid sulfoxides.

  • To form a chemical called Syn-propanethial-S-oxide.

  • This chemical is volatile, that is, it easily evaporates at normal temperature, forming a gas.

  • When this gas reaches our eyes.

  • It reacts with the substance that keeps our eyes lubricated and forms mild sulfuric acid.

  • What?

  • An acid in my eyes.

  • Absolutely.

  • This sulfuric acid gives us a burning sensation.

  • Now, in order to wash off this acid, our lacrimal glands produce a disinfecting liquid.

  • But when our eyes cannot hold any extra amount of disinfecting liquid.

  • It starts to fall down, making us cry.

  • What is sleep paralysis?

  • No idea.

  • Sleep paralysis is a condition in which we are conscious but temporarily unable to move or speak.

  • It can usually occur when we suddenly wake up during REM sleep.

  • What is REM sleep?

  • Basically, there are four stages of sleep.

  • One of them is Rapid eye movement sleep, that is, REM sleep.

  • In this stage, we dream.

  • Researchers suggest that when we enter REM sleep, two chemicals.

  • Glycine and GABA "switch off" the activity of cells in the brain that allow our muscles to move.

  • Oh no.

  • This is so bad.

  • No!!

  • It is actually beneficial.

  • Because paralyzed muscles prevent us from enacting our dreams in reality and getting hurt.

  • However, sometimes we suddenly wake up during REM sleep.

  • But if glycine and GABA are still active, we are temporarily unable to move.

  • Even though we are conscious.

  • This is called sleep paralysis.

  • Why are sunsets red?

  • Because sunsets are romantic.

  • No.

  • It is basically because of scattering of light in the atmosphere.

  • Our atmosphere is primarily composed of tiny nitrogen and oxygen particles.

  • Now usually, when sunlight comprising of seven colors passes through the atmosphere.

  • It hits the nitrogen and oxygen particles.

  • These particles scatter blue and violet light more as compared to red.

  • Orange and other colored lights.

  • Hence, mostly bluish light enters our eyes, thus making the sky to usually appear blue.

  • However, during sunset, the sunlight must pass through a greater distance in the earth's atmosphere

  • Causing it to pass through more particles.

  • As a result, most of the blue and violet light get scattered before they reach our eyes.

  • Due to this, the less scattered light like red or orange reaches our eyes.

  • Making the sunset appear red.

It's AumSum Time

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B2 US nuclear nuclear fusion fusion fission sleep rem sleep

Does Octopus have Nine Brains? | #aumsum

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    AumSum posted on 2019/04/08
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