Who discovered Electromagnetic waves?

CONCEPT:

• Electromagnetic waves: It is a transverse wave defined as composed of oscillating electrical and magnetic fields perpendicular (90°) to each other.
• The Speed of electromagnetic waves is the same as of speed of light c = 3 × 10⁸ m/s.

EXPLANATION:

• James Clerk Maxwell: He is a Scottish Mathematical physicist. He proposed equations of Magnetism (Maxwell’s equations of electromagnetism) and predicted that electromagnetic waves exist but didn’t discover it.
• Heinrich Rudolf Hertz: He is a German physicist who conclusively proved the existence of electromagnetic waves. The unit of frequency, Cycles per second was named Hertz in his honour.
• Michael Faraday: He is an English Scientist who discovered principles of Electromagnetic induction, Electrolysis and Diamagnetism. The SI Unit of capacitance is Farad in his honour
• Hans Christian Oersted: He was a Danish physicist who finds out that electric current creates a magnetic field.

So, Option 2 is correct.