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Showing posts from November, 2018

What percentage of the World's population has green eyes?

Green eye colour is often confused with hazel eye colour, yet is entirely separate and distinct. Green eye colour is the rarest colour found around the world, and it is estimated that only 2% of the world's population has green coloured eyes.

How many miles per hour does the earth move around the sun?

The circumference of the Earth at the equator is 25,000 miles. The Earth completes one rotation in about 24 hours. Therefore, if you were to hang above the surface of the Earth at the equator without moving, you would see 25,000 miles passes by in 24 hours, at a speed of 25000/24 or just over 1000 miles per hour.

How much money is there in the world?

As of July 2013, there is approximately $10.5 trillion in existence, using the M2 money supply definition. If anyone wants to count the actual number of notes and coins there are about U.S $1.2 trillion floating around the world.

When was the first search engine created?

When the 'World Wide Web' was created in 1989, it wasn't ever thought that it will be a revolution in the field of the Computers and Internet. It was in 1993, that many websites were created, but most of them were only available in colleges. But a lot before them was created Archie, which was the first search engine created in 1990 by Alan Emtage, who was a  student at the McGill University in Montreal, which gave a platform for a lot of websites. 

What sentences use the whole alphabets?

Do you know what are 'Pangrams'? Well, these are sentences which uses the whole alphabets. You would probably have listened these- The quick brown fox jumps over a lazy dog or Pack my box with five dozen liquor jugs. Do you know any other pangrams, feel free to share with us. 

How many states of matter are there?

Four states of matter are easily observable in everyday life- solid, liquid, gas and plasma.  Many other states are known such as Bose-Einstein condensates and Neutron Degenerate matter but these only occur in extreme situations such as ultra cold or ultra dense matter.

Who invented the passenger elevator?

The man who solved the elevator safety problem, making skyscrapers possible, was Elisha G. Otis who is generally known as the inventor of the modern elevator. In 1852, Otis came up with a design that had a 'safety brake'. He didn't invent the elevator. Elevators existed before he introduced safety brakes to prevent it from falling if the cables fail. The earliest known reference to an elevator dates back in the works of the Roman architect Vitruvius, who reported that Archimedes (287 BCE to 212 BCE) built his first elevator probably in 236 BCE. Where are the world's fastest elevators? The Shanghai Towers hold the current record of world's fastest elevators with their cars traveling at 73.8 km/h or 45.9 mph. The elevator was manufactured by Mitsubishi Electric and was installed on 7 July 2016.