3. Hans Christian Oersted
The field of electromagnetism was only six
years old when Henry began teaching at the
Albany Academy in New York. Danish scientist
Hans Christian Oersted had discovered in
1820 that an electrical current in a wire from a
battery caused a nearby compass needle to
deflect.
4. Michael Faraday
1831 Discovery of Electromagnetic Induction.
This was an enormously important
discovery for the future of both science and
technology. Faraday discovered that a varying
magnetic field causes electricity to flow in an
electric circuit. Moving the magnet causes a
current to flow
5. Clerk Maxwell
Maxwell's Electromagnetic Theory of Light
Propagation. The Scottish physicist James
Clerk Maxwell contributed a great deal to the
field of physics during the 1860s, with his
theories on magnetism, optics and electricity
completely transforming the realm of
scientific discovery