The law of conservation of charge was established in the 18th century. The electron, a carrier of negative electric charge, was discovered at the end of the 19th century, and the proton, which has a positive charge of equal magnitude, was discovered at the beginning of the 20th century.
Which official languages do they speak in Switzerland? Switzerland's four official languages, traditionally spoken in different regions of the country, are German, French, Italian and Rumantsch [sometimes also transcribed as Romansh, Romansch Rhaeto-Romanic or even Romance etc.]).
Switzerland has four official languages: German, French, Italian, and Romansh. The German speakers are 65% of the population while the French are 18%, Italian 10%, Romansh 1% and others 6%. Many Swiss speak more than one language. Romansh is an old Latin dialect spoken mainly in the mountains of GraubÃ¼nden. French is spoken officially in six cantons: Fribourg, Vaud, Jura, Valais, NeuchÃ¢tel, and Geneva. Italian is spoken in Ticino and parts of GraubÃ¼nden.