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1.Electricity 2.Magnetism 3.Electromagnetism CLASSICAL PHYSICS Electricity & magnetism.

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Presentation on theme: "1.Electricity 2.Magnetism 3.Electromagnetism CLASSICAL PHYSICS Electricity & magnetism."— Presentation transcript:

1 1.Electricity 2.Magnetism 3.Electromagnetism CLASSICAL PHYSICS Electricity & magnetism

2 Forces of nature Gravity Electromagnetism Nuclear (Strong & Weak) Projectiles Planets Galaxies Universe Light Atoms Technology Nucleus Radioactivity Stars

3 Electric Force Attraction or repulsion between objects with charge Increases with charge of object(s) Decreases with distance between objects Same rules everywhere in the universe

4 Electric Force (=> acceleration) Constant Direction, increasing speed e.g. Light bulb activation by electric current Changing Direction, constant speed e.g. atomic stability from orbiting charge

5 Magnetic Force Attraction or repulsion between moving objects with charge Increases with relative speed of object(s) Decreases with distance between objects Same rules everywhere in the universe

6 Magnetism inside atoms Magnetism from electric current Electric current from magnetism

7 Maxwell’s equations encapsulate all electric and magnetic phenomena (still) Who is really moving? Relative motion --> Electricity = Magnetism Einstein: Maxwell’s equations inconsistent with Galilean Relativity (1 ± 1 rule for speeds) --> Beginning of modern physics

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