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How does a ZIPPER works??
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A Zipper or Zip fastener is a mechanical device used for closing two open ends of fabric or any material. This small piece o...
Why February month has the least number of days?
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February being the second month of the year, has the least number of days. How was February chosen to have the least number of...
Why TANKER TRUCKS are made cylindrical and not cubical?
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Many kinds of liquids are transported by road and railway. The tanks carrying these liquids are made cylindrical in shape a...
Why do Soft Drink Bottles have 5 bumps at the bottom??
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Soft drink and soda bottles, especially those made of plastic are not flat bottomed . The foot of the bottles usually has ...
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Where does the water dripping out of your Air Conditioner come from?
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The water dripping out is same as the water droplets which forms over a cold water bottle when it is placed outside the ref...
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