Hi guys 👋 this is part 1 of DID YOU KNOW THAT...SCIENCE FACTS! 
💡There is liquid had to for this the air must be coolled to about 200 degree Celsius.
💡 fuming dry ice is solid carbon dioxide CO2 white whispe of smoke enominate from a solid block of dry eyes does ATM operates without melting it sublimates
💡 1l of hair on the earth contain about thousand billion atom but in space it is just 300 atom
💡 one by 10 mm think metallic foil consists of 1 million layers of atoms lying 1 above the other.
💡 flice do not fall from the roof because they have special appendages on their feet that bind them to the surface.
💡 astronauts we are diapers in there space suit in the space shuttle.
💡 a long stay in weightlessness can lead to weakness since there or no forces acting on bones and muscles in space these can hardly used and degenerate.
💡 simple magnets can be demagnetized by hammering them powerfully or by heating them on open fires.
💡 even the egyptians used pulleys while building the pyramid for putting the stone block weighing several tons 1 above the other.
💡 friction is important without it we cannot applied brakes.
💡 home trapped travel very fast because the friction between the boat and the water is reduced by an air cushion.
💡 earlier than rollers of waving looms were called pulls the name Pulley is derived from this word.
💡 we need a lot of energy even when we think and not just when we do steronous physical work.
💡 currently 3/4th of all the energy on the earth is consumed by only around one fourth of the population of the Earth.
💡 during the winter sleep marmots reduce their body temperature from 1939 degree Celsius to 7 degree Celsius and their heart beats to only two two three times per minute instead of 100 times.
💡 there are strong Electromagnet in the track of the magnetic levitation train when the current is switched on the two magnet repel each other that trainers rised by 15 mm and moves on the track without any friction.
💡 dielectric eel generate voltages up to 600 volt in special muscles in this way it can effectively defend itself against enemies
💡 voltages starting from 48 volt are considered fatal hence electric toys should have a minimum voltage of 24 volt
💡 power saving lamp can last 8 times longer than normal bulb and consume only about 1 -4th of electricity 
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