What is Corrosion?

Corrosion is the process of collapsing of materials as a result of electro chemical, chemical or other reactions. In this, rusting is a part of corrosion and is a chemical process which results in the formation of red or orange coating, which is one the surface of metals. Metal corrodes when it reacts with many other substances such as hydrogen, oxygen or even bacteria. It can also happen when metals like steel are placed under too much pressure which causes the material to crack.

The types of Corrosion are: Uniform, or General attack, Galvanic, or two-metal corrosion, Crevice corrosion, Pitting, Inter-granular corrosion, Elective leaching, or parting, Erosion corrosion, and Stress corrosion.

When metals are damaged, they are easily oxidized and hence lose electrons to oxygen in air and water, thus and oxide is formed in the metals when oxygen is reduced. Forrest, Roetheli and brown in an instructive research proved that corrosion occurs through various different experiments.

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Evolution of Aircrafts

Since that fateful day in December of 1903, airplane design has changed dramatically. The Wright Brothers built a biplane with two propellers that were chain-driven by a gasoline motor. Our dependence on air travel over the years has forced airplane design to catch up with the times. On December 17, 1903, Wilbur and Orville Wright made four brief flights at Kitty Hawk with their first powered aircraft. The Wright brothers had invented the first successful airplane. The Wrights used this stopwatch to time the Kitty Hawk flights. Aircrafts have evolved so much from the initial days. From 2 seater to the latest air bus type, they have come a long way. The history of aviation extends for more than two thousand years, from the earliest forms of aviation such as kites and attempts at tower jumping to supersonic and hyper-sonic flight by powered, heavier-than-air jets. Kite flying in China dates back to several hundred years BC and slowly spread around the world. Sir George Cayley...

How Electric Current is formed?

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