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Sunday, September 12, 2010

Why do nitrogen filled in modern vehicle tyres, Does filling nitrogen in tire have any benefit ?

Normal air contains about 73 % of nitrogen and rest contains 20% of oxygen and other vapor. Filling nitrogen instead of air is generally in racing cars tyres, aircraft tires and in heavy commercial vehicles. In normal air filled tyres commonly heats when running due to the moisture inside the tire. If we filled nitrogen in tires the running temperature reduces dramatically and the result is longer tyre life. In case of tubeless tires nitrogen doesn't reacts with rims. We do not need to check tyre pressure regularly if filled the tire with nitrogen ( check it after 5 months).

Some major benefits of filling nitrogen in tires are


  • Low inflation pressure loss.
  • low wheel corrosion.
  • Nitrogen prevents inner rubber deterioration by oxidation
  • Tires run cooler.
  • Increased tread life.
  • Increased mileage.
  • Helps prevent uneven wear.

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Sunday, September 5, 2010

What is a shooting star?

In fact, shooting stars are not stars at all. We call them meteors, and scientist’s believe that they are broken fragments of comets, which still move about in space when the comet itself does so no longer. We see them when they enter our atmosphere because they leave a trail of light behind them, caused by the friction of the air on their surfaces. Most meteors are very small, but some can weigh several tens, and the vast majority of them disintegrate when they pass through the heat of the earth’s atmospheres. But some meteors, the larger ones, do land on earth, and when they do we call them meteorites. There are two main types of meteor – those made of minerals, which look like rock and are called aerolites, and those made chiefly of nickel and iron, which were call metallic meteors. Although it is very rare for a meteorite to fall on dry land, scientists think that many fall to earth every day, but that they land in the water which makes up two thirds of the earth’s surface. This is why we hardily ever notice when they do hit the earth.

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