[Music] it's um sometime what if we had two heads no big deal I already have two heads oh I'm some if we had two heads we will now need to pay double for our haircut people having a bad hair day may now get extremely frustrated we will now need one more cap glare helmet Etc we may not be left with much cash hmm our two heads may think very differently we may end up doing different things with different hands our two heads may keep on banging with each other May refuse to share items with each ot
her hmm if one head starts snoring the other one may not be able to sleep hmm this will get caught very easily now hmm aliens may start worshiping us sellers of shampoo bottles will suddenly double their income hmm to buy um some merchandise visit umsum.com [Music] how do batteries work that is a secret I can't tell anyone oh um some a battery works by converting chemical energy into electricity a battery consists of one or more electrochemical cells an electrochemical cell consists of two elect
rodes separated by an electrolyte when the battery's two electrodes are connected into a circuit the negatively charged electrons start flowing through the external wire while the positively charged ions start flowing through the electrolyte this balancing of charge is important to keep the reaction running now this flow of electrons through the external wire is basically electricity it allows us to power our devices this is how batteries work hmm also there exists a semi-permeable barrier in th
e electrolyte so that all the ions do not immediately coat the electrode and thus clog the system if our hair was made of gold oh no I just colored my hair oh I'm some firstly if our hair was made of gold person with the longest hair in the world might become a billionaire hmm secondly if our hair was made of gold people may stop cutting their hair hair salons might shut down thirdly if our hair was made of gold bald people would be very disappointed fourthly if our hair was made of gold people
may start wearing matching dresses demand for gold colored dresses might shoot up hmm fifthly if our hair was made of gold cutting our hair will not be easy anymore special hair cutting Machinery will be required lastly if our hair was made of gold instead of buying new gold people may start using their hair to make new jewelry hmm what if we become slower than a sloth no ways I'm some is always extremely fast oh I'm some firstly if we become so slow 100 meter race will get extremely boring peop
le may stop watching it all together secondly if we become so slow food delivery guys might start delivering their orders very late food will not taste that tasty anymore [Music] thirdly if we become so slow everyone might start coming late to the office bosses would be one sad lot fourthly if we become so slow actors will also deliver their dialogue very slowly movies might become extremely long [Music] Faithfully if we become so slow animals will be amazed looking at us catching them will not
be an easy task anymore lastly if we become so slow we may also start eating very slowly some people might actually lose weight huh [Music] how does a hair straightener work simple it pulls the hair in order to straighten it oh um some our hair cuticles are made up of a protein called keratin hmm it is because of keratin that our hair becomes strong and it is not possible to easily break it now keratin is held together by hydrogen bonds hmm these hydrogen bonds are responsible for maintaining th
e natural shape of our hair hmm they can be modified either by applying water or heat hmm a hair straightener makes use of this property and straightens our hair by applying heat when we apply heat using a hair straightener the hydrogen bonds are modified this allows us to rearrange our hair as in straighten our hair this type of styling is only temporary after some time or if our hair comes in contact with water the hydrogen bonds start returning back to their original shape the leap years simp
le be because I can take great leaps oh I'm some by definition a leap year is a calendar year that contains an additional Day added to keep the calendar year synchronized with the astronomical year our year consists of 365 days a year is the amount of time it takes a planet to orbit its star one time it takes Earth approximately 365 days and six hours to orbit the Sun so there is a difference of six hours between our calendar year and solar year hmm now those six hours just can't disappear right
hmm in order to make sure that our calendar year matches the solar year after every four years we add those six hours four times as in one day is added to a year thus this year has 29 days in February instead of 28. this is why we have leap years hmm how do electromagnets work simple they work because they have a Magnetic Personality like me oh I'm some the construction of an electromagnet is very simple a conductive wire usually made of copper is wrapped around a piece of metal in this case ir
on now with the help of a battery a current is introduced this current starts flowing through the coiled wire resulting in the creation of a magnetic field this magnetic field magnetizes the iron metal thus resulting in the creation of an electromagnet an electromagnet is similar to a magnet it has two poles like poles repel each other while Opposites attract hmm it is also able to attract iron filings the only difference is that the magnetism is not permanent once the current is removed magneti
sm may stop working suddenly or after some time hmm an electric Bell is a good example of the use of an electromagnet [Music] drones fly simple like birds they flap their wings oh um drones commonly make use of rotors to fly hmm just like a fan when the blades of a rotor start spinning they start pushing air downwards while in response to this the air starts pushing up on the rotor hmm if the net force generated by the rotors and pushing the Drone up is equal to the gravitational force pulling i
t down then the Drone starts hovering in the air hmm if the speed of the rotation of rotors is increased to such an extent that the net force generated becomes greater than the gravitational force then the Drone starts going up as in climbing hmm lastly if the speed of the rotation of rotors is decreased to such an extent that the net force generated becomes less than the gravitational force then the Drone starts coming down as in descending hmm how do hurricanes form I form them I am the master
of Thunder oh um some hurricanes form only over warm ocean waters near the equator this warm water evaporates resulting in the formation of warm moist air over the ocean's surface this air rises up creating an area of low air pressure below air from surrounding areas pushes into this low pressure area the Sarah also becomes warm and moist and Rises this cycle keeps on continuing now as the warm moist air keeps on Rising it cools off and forms clouds even big stormy cumulonimbus clouds are forme
d now as the warm air continues to rise upward winds start blowing in a circular pattern around the center once these winds reach a speed of 74 miles per hour the storm is officially classified as a hurricane
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