Google

Google Inc. is an American multinational public corporation invested in Internet search, cloud computing, and advertising technologies.

Google began in January 1996 as a research project by Larry Page and Sergey Brin when they were both PhD students at Stanford University in California.
Originally, Google ran under the Stanford University website, with the domain google.stanford.edu.
The domain name for Google was registered on September 15, 1997, and the company was incorporated on September 4, 1998.

Google has had several logos since its renaming from BackRub. The current official Google logo was designed by Ruth Kedar, and is a wordmark based on the Catull typeface.
In 1998 Sergey Brin created a computerized version of the Google letters using the free graphics program GIMP.
"There were a lot of different color iterations", says Ruth Kedar, the graphic designer who developed the now-famous logo. "We ended up with the primary colors, but instead of having the pattern go in order, we put a secondary color on the L, which brought back the idea that Google doesn't follow the rules."

The Google logo font is Catull BQ, and it was created for Berthold in 1982 by German designer Gustav Jaeger.

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Petrol Engine

A petrol engine (known as a gasoline engine) is an internal combustion engine with spark-ignition, designed to run on petrol (gasoline) and similar volatile fuels.

It differs from a diesel engine in the method of mixing the fuel and air, and in using spark plugs to initiate the combustion process. In a diesel engine, only air is compressed (and therefore heated), and the fuel is injected into the then very hot air at the end of the compression stroke, and self-ignites. In a petrol engine, the fuel and air are usually pre-mixed before compression (although some modern petrol engines now use cylinder-direct petrol injection).

The pre-mixing was formerly done in a carburetor, but now (except in the smallest engines) it is done by electronically controlled fuel injection. Petrol engines run at higher speeds than diesels, partially due to their lighter pistons, con rods and crankshaft (as a result of lower compression ratios) and due to petrol burning faster than diesel. However the lower compression ratios of a petrol engine give a lower efficiency than a diesel engine.


Uses of Petrol Engine

Motor cars
Motorcycles
Aircraft
Motorboats
Small machines, such as lawn mowers, chainsaws and portable engine-generators


Petrol engines may run on the four-stroke cycle or the two-stroke cycle.

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