know here all things of Galvanometer was invented by which scientist | Johann Schweigger discovered what ?
question : Electricity was invented or discovered by whom ?
answer : The famous scientist named Johann Schweigger was the inventor of Galvanometer in the year of 1820.
question : Johann Schweigger invented which thing and when ?
answer : In ‘1820’ year the well known scientist whose name is ‘ Johann Schweigger ‘ was the inventor of Galvanometer.
question : when and by whom Galvanometer was discovered ?
answer : Galvanometer was the discovery of Johann Schweigger which was discovered in 1820 year.
so in short we can say –
invention : Galvanometer
inventor : Johann Schweigger
year : 1820
हिंदी माध्यम नोट्स
English medium Notes