Why only red ? Why not blue, orange, purple, pink or any other colour ?
In case, if you think that red was the favorite colour of the one who had this idea (humour me) then you’re… WRONG !
Seriously, when I came to know about it, I realised that – Yes, everything has a reason ! & the brake lights having red colour has a reason too ! more “Why are brake lights red ?”
How do elevators or lifts work ?
Seriously, what would have happen if there were no elevators & if people were to walk up & down a 50 or 100 storey building everyday in cities like NY ! I can’t even imagine the fatigue.
Well, keeping our thought aside, let us see how do elevators work ? more “How do elevators or lifts work ?”
What happens when an aircraft travels more than the speed of sound ?
Does everything remain normal ? I guess NO.
Fighter jets are specially designed for that – powerful weapons, missiles & high speed. So here we will talk about what happens when an aircraft travels more than the speed of sound or breaks the sound barrier ! more “What happens when an aircraft travels more than the speed of sound ?”
Amazing Archimedean screw !
The name itself gives us an idea that it is invented by Archimedes.
Now this man – Archimedes, was an Ancient Greek mathematician, engineer, inventor, physicist, & an astronomer(such a smartass). We are living in 21st century & still we are not able to think stuff like this on our own & this man did it in the 3rd century BC !!!!!
We already discussed one of his works – buoyancy & we saw how do ships float ?
So the Archimedean screw OR screw pump is just a simple machine consisting a cylinder & a helical surface on the inside part of cylinder. Basically, it was designed to work like a pump & it worked without any of our presently available motors which we use to run todays pumps. The screw was used mostly for draining water out of mines or other areas of low lying water.
Construction :-
The screw pump consists of a screw or a helical structure inside a hollow pipe. The screw is turned through a handle which is outside the cylinder. As the shaft turns, the bottom end scoops up a volume of water. The water then gets pushed out up by the rotating helicoid until it pours out from the top of the tube & done just so simple.
Applications OR Uses :-
Why it was made ? – the first purpose was to transfer the water from low lying region to other parts of
the city. Along with transferring water to irrigation ditches, the device was also used for draining land that was underneath the sea in the Netherlands and other places in the creation of polders.
A screw conveyor :-
It is an Archimedean screw contained in a tube & turned by a motor so as to deliver material from one end to other end. It is particularly used for transporting granular materials such as plastic granules used in injection molding and cereal grains.
Screw turbine :-
If water is poured into the top of Archimedes’s screw, it forces the screw to rotate. The rotating shaft can then be used to drive an electric generator.
Worm gear :-
This is actually not an application of the Archimedean screw but yea it might be an inspiration to the one who designed & invented the worm-gear mechanism.It is awesome & I really love it. Remove the outer cylinder of the Archimedes’s screw, mesh a gear of proper tooth thickness with the screw & we are done. Here the screw thing is called worm. Now the reason I love it is because the worm will definitely drive the gear but the gear may or may not drive the worm depending on the design of worm.
(It’s like if you close your door/gate of your house with help of worm gear mechanism, only you would be able to open & close it from inside because only you would be able to rotate the worm. Don’t ever worry about burglars unless & until the gate/door is big enough & not made of wood ! 😛 )
All hail great polymath – ARCHIMEDES !
source & animations source :- wikipedia.org
Why does a spinning ball follows a curve path during flight ?
You must have noticed this while watching a football match that a spinning ball follows a curve path during flight ! So why does this happen ? Lets find out… more “Why does a spinning ball follows a curve path during flight ?”
How does a submarine work ?
What is submarine & why do we need it ?
Imagine you are on-board a ship & what would be the worst thing that would happen to you ? – the water flooding inside the ship making it sink to the seabed…damn…! So we need something which ensures either it doesn’t sink OR even after sinking, all be safe.
So in simple words – a Submarine is a vehicle which allows us to travel on water as well as deep inside the seas & oceans.
Also a submarine is used in military for protection purposes. more “How does a submarine work ?”
How can a Formula 1 race car could be driven upside down ?
Woah… this shit is real !
Let’s see how is this possible.
Ever wondered what is that blade type thing at the back of sports car ? Well, it isn’t just for show. NFS gamers- now is the time to brag that you know, they are called SPOILERS ! more “How can a Formula 1 race car could be driven upside down ?”