Every action has an equal and opposite reaction.

To decelerate the aircraft, the forward thrust of the aircraft which propels the aircraft forward is reversed by a Thrust Reverser. This is accomplished by redirecting all the air ( in small engines ) or partially ( in larger engines ) to the front.  

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Due to the flow of air to the front end of the aircraft, a reaction force acts in the opposite direction to the motion of the aircraft. This aids in the deceleration of the aircraft.

Your smartphone does not need a Screen Protector!

Gone are those days when merely placing your phone and your car keys would induce scratches on the screen and having a mobile phone without a screen protector was unimaginable. But Hey! We are now in the “Glass Age”. Over the years, Significant advancements in Glass and coating technology has made the screen protectors redundant! 

Why?

All of modern day mobile phones are made out of Gorilla Glass. Gorilla Glass is a specialized toughened glass developed and manufactured by Corning. It is designed to be thin, light and damage( including scratch ) resistant.

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Your smartphone per se is scratch resistant! You don’t need to invest extra money on buying Screen protectors and other accessories anymore! Take a knife or a key and if you attempt to scratch your smartphone, you shouldn’t see scratches at all!

A note of caution.

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Some materials CAN scratch Gorilla Glass. The most common being Sand and Diamond. So if you happen to spend a lot of time at the beach, having a screen protector is essential. You have been Warned ;P

EDIT: Any product if you set out to break it, it will eventually succumb!

The Bernoulli Family.

Bernoulli’s principle, Bernoulli’s number, Bernoulli’s polynomial, Bernoulli’s differential equation and the list goes on.

If you were like me and thought that Bernoulli was the name of a single guy, you are soo wrong. They were a family !

Over the course of three generations, the Bernoullis produced eight mathematically gifted academics who, between them, contributed to the foundations of applied mathematics and physics. 

Some of the most popular ones of the family are:

1. Daniel Bernoulli ( Inventor of the Bernoulli’s equation )

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2. Jacob Bernoulli. ( The Bernoulli Numbers )

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3. Johann Bernoulli. ( One of the early adopters of Infinitesimal Calculus).

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And the rest contributed extensively to the fields of math and physics.

If you are want to know more about the history of the Bernoulli Family click here.