Humphrey Davy...English...1800...First electric lamp
Joseph Wilson Swan...English...1860...First long-lasting electric lamp
Charles Francis Brush...American...1877...First carbon arcs to light a public square
Thomas Alva Edison...American...1879...First carbon filament lamp
Verdi: Composer.Volta: Physicist who is credited with invention of the first batteryVoltaire: Writer and Philosopher
tesla
China
The Danish scientist you are referring to is Hans Christian Oersted. He discovered that an electric current creates a magnetic field, which laid the foundation for the development of generators and electric motors.
Nikola Tesla
"The last century saw many people whoselives changed after the invention of radio and television."The pronoun is 'whose', a relative pronoun that introduces the relative clause 'whose lives changed after the invention of radio and television'. The relative clause gives information about its antecedent 'people'.
electric conductance
A molecule whose ends have opposite electric charges is called a polar molecule.
Such a molecule is said to have an electric dipole.
The invention of barbed wire by Joseph Glidden changed the West for farmers whose land and livestock needed protection.
Clarence Birdseye
Polar