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Kuvakäsikirjoitus Teksti
- Can you give me the contribution of Oersted?
- In year 1820, Hans Christian Oersted discovered that an electric current affects compass needle and creates magnetic fields
- And what is the contribution of Ampere
- Andre Marie Ampere,in year 1821 Ampere's theory of electrodynamic that two parallel circuit attract one another if current flow in the same direction and it will repel if the circuit flow in the opposite direction.
- How about the contribution of Faraday?
- In year 1831, Micheal Faraday found that the magnetic field created around a conductor carried direct current. He discovered the principles of electromagnetism induction
- And you?? Do you know what is the contribution of Maxwell?
- James Clerk Maxwell in 1873, . He published "Treatise on Electricity and Magnetism", which he summarizes the discoveries of Columb, Oersted, Amperes and Faraday.And he predicts the connections of magnetism and electricity.
- What do you think the contribution of Hertz?
- In 1885, Heinrich Hertz proved Maxwell's electromagnetic wave theory was correct. the discovery of electromagnetic waves led to developed the radio. The unit of frequency of the waves measured in cycles per second was named "Hertz".
- Wow! I'm so glad that you got it right. I'm so proud for all of you!
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