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- At the science lab, the students were asked by their teacher about the topic that they discussed yesterday and about the scientist who developed the Electromagnetic Wave Theory
- As we discussed yesterday, let me ask you if you really understand the topic that we tackled yesterday. Can you give a scientist that contributed to the development of the Electromagnetic Wave Theory and its corresponding contributions? There are eleven of them
- Ma'am, I remember Andre Marie Ampere who invented the astatic needle and also the first to demonstrate that a magnetic field is generated when two parallel wires are charged with electricity.
- Good! Anyone else?
- Philo Farnsworth was also one of the scientists and transmitted the first "electronic television image."
- As far as I remember, Michael Faraday was known for his discovery of electromagnetic induction. He also discovered the principles underlying diamagnetism, and electrolysis.
- Reginald Fessenden was one of the scientists that I remember and developed the idea of superimposing an electric signal, oscillating at the frequencies of sound waves, upon a radio wave of constant frequency, so as to modulate the amplitude of the radio wave into the shape of the sound wave (the principle of amplitude modulation or AM).
- Heinrich Hertz was also one of the developers and one who demonstrated that the electromagnetic waves predicted by James Clerk Maxwell actually exist.
- Ma'am, I also remember Joseph Henry who discovered the property of inductance in electrical circuits, which was first recognized at about the same time in England by Michael Faraday, who was the first to publish on the subject.
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