How & why does a whip make a cracking sound ?

The carriage drivers whipcrack (We will get to this term soon) the whip . So we thought that the whip must be hitting the animal or perhaps must be hitting itself & that might be the reason why we are able to hear the loud sound ! But aa-aa, that’s…

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How does a 2 stroke engine work ?

In my previous article, we learned how 4 stroke engines work ! This time we will learn about the second type of engine i.e 2 stroke engine. The 2 stroke engine is a type of Internal combustion engine where one power cycle is completed with two strokes of the piston…

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How does a 4 stroke engine work ?

Working of 4 stroke engine with animation

ENGINES – the powerhouses, the hearts of vehicles which makes them alive… are finally here ! This is my first article in Engines section. We’ll come across more of them as we progress further. So we are gonna start with one of the most basic engines used in cars &…

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NASA’s next Mars rover mission – 2020

After an overwhelming success of Mars rover mission 2012, NASA’s next nuclear powered Mars rover is planned to launch in 2020. Scientists say that – it is gonna be way more smarter & efficient than Curiosity, which is currently exploring the red planet. Curiosity had an awesome design, heck lot…

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Why are brake lights red ?

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 the answer hit my mind I realised that –…

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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 ?…

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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 ! Mach number :- In…

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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…

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Why does a spinning ball follows a curve path during flight ?

Most of the time 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… Bernoulli’s principle :- For an inviscid(non viscous) flow of a non-conducting fluid, an increase in the…

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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…

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