Hans Christian Oestered discovered the electricity and magnetic produce.
Hans Oersted discovered Electro- Magnetic Induction in 1820
he discovered the enrgy of the sn
Elecrofapnetic
Hans and Zacharias Janssen invented the first compound microscope.They did not discover it.
in manila
1937
Copenhagen Denmark
he discovered a form,ula in which to determine the velocity of a particle.
They were discovered in Holland around 1590 by Hans and Zacharias Jansen.
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Hans Janssen was one of three Dutch lens makers variously credited with the invention of the microscope itself. The other two are Sacharias Janssen, his son, and Hans Lippershey.