How do cricket balls make?

A cricket ball is made from cork and covered with leather. Its diameter should lie in the range from 22.4 to 22.9 centimeters, and mass - from 155.9 to 163 grams. As part of one move, usually one ball is used. The exception is those cases when the projectile is lost - then it is replaced by a similar one. In addition, the field team may ask for a replacement ball after a number of sets of six innings. A red ball is used in test cricket, a white ball in cricket with limited overs. But just look what an effort it takes to make this small sports equipment!

I wonder how a nuclear reactor works and can robots build a house?

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