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...ng]], [[chemistry]], [[biology]], [[geology]] and [[geography]]. [[Russian inventors]] and engineers excelled in such areas as [[electrical engineering]], [[shi ...ne of Russian inventions and technology records|Russian scientists|Russian inventors}} ...

...lienanzeigen in Tageszeitungen |access-date=8 November 2022}}</ref>) was a German [[cryptology|cryptologist]], who before and during [[World War II]], worked ...ge of 28, Fritz Menzer became the Chief of Communications Security for the German Army.<ref name="fritz"/> Menzer stated at the time: ...

...ysics)|period]] of [[Cepheid]] [[variable stars]] at the beginning of 20th century. ...chemistry: their changing roles from alchemical times to the mid-twentieth century|last=F.|first=Rayner-Canham, Marelene|date=1998|publisher=American Chemical ...

...the human population will begin to decline in the second half of the 21st century.<ref>{{Cite news |last1=Cave |first1=Damien |last2=Bubola |first2=Emma |las ...s, broken down by continents, were published in the first half of the 19th century, at 600 million to 1&nbsp;billion in the early 1800s and 800&nbsp;million t ...

The '''history of nuclear fusion''' began early in the 20th century as an inquiry into how stars powered themselves and expanded to incorporate ...pacenet.com}}</ref> by the [[United Kingdom Atomic Energy Authority]]. The inventors were [[George Paget Thomson|Sir George Paget Thomson]] and [[Moses Blackman ...

...ray; Or, Photography of the Invisible and Its Value in Surgery'' (English; German: ''Röntgenstrahlen'', or: ''Die Photographie des Unsichtbaren und ihr Wert The '''history of radiation protection''' begins at the turn of the 19th and 20th centuries with the realization that [[ionizing radiation]] from natural and ...

...of the House of Representatives to honor the life and achievements of 19th Century Italian-American inventor Antonio Meucci, and his work in the invention of .... [https://archive.today/20120712220408/http://inventors.about.com/library/inventors/bl_Alessandro_Volta.htm Alessandro Volta - Biography of Alessandro Volta - ...