What was contribution of Max Born to Physics?

Max Born (1882 1970) was a physicist and mathematician who won the 1954 Nobel Prize in Physics for his research in the area of quantum mechanics, solid-state physics and optics. Max was born in Breslau (now in Poland). His first research paper was published in 1912 on lattice vibrations. It was inspired by Einstein ‘s

What is the history of hole punch?

The origin of humble office tool hole puncher or hole punch are quite unknown. For the first time, the two-hole punch was introduced by Friedrich Soennecken, a German businessman and inventor, on 14 November 1886. It was called Papierlocher für Sammelmappen (paper hole maker for binding). The design has not much changed after this invention. The