The power of the first lasers was measured by the number of razor blades the laser beams could pass through.
Grand piano consists of about 12.000 parts.
The first personal computer was made in January 1975 in the company MITS in New Mexico. It cost about 395 US dollars, and customers had to assemble it by themselves. It was called the Altair 8800.
It is impossible to sneeze with your eyes open.
In 100 grams of butter, there are three times more calories than in the same amount of meat.
Isaac Newton was kicked out of school. He was expelled as a teenager at the request of his mother, who wanted him to become a farmer.
