July 2022

Zero

Zero, one of man’s greatest inventions, was a concept that has had a tremendous influence on the history of mankind because it made the development of higher mathematics possible.Until about the sixteenth century, the number system used in Europe was the Roman system, invented about two thousand years ago. The Roman system was built on

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X-ray

On 8 November 1895, Wilhelm Conrad Roentgen accidentally discovered an image cast from his cathode ray generator, projected far beyond the possible range of the cathode rays. Further investigations showed that the rays were generated at the point of contact of the cathode ray beam inside the vacuum tube, that they were not deflected by

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