Electromagnetism
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31 Terms
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Hans Christian Oersted
discovered that electric currents create magnetic fields
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Hans Christian Oersted
Magnetic needle is deflected when a current in a nearby wire varies
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Hans Christian Oersted
Electric current creates a circular magnetic field
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Hans Christian Oersted
Electric telegraph
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Andre Marie Ampere
Discovered Electrodynamics
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Ampere
Unit for electric current
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Andre Marie Ampere
performed experiments to elucidate the relationship between electric current and magnetism
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Joseph Henry
Insulated wires instead of iron core
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Joseph Henry
Wrapped the large number of turns of wire around the core, increasing the power of the magnet
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Michael Faraday
Electro magnetic induction
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Michael Faraday
Diamagnetism
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Michael Faraday
Electrolysis
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James Clerk Maxwell
Electromagnetic radiation/spectrum
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James Clerk Maxwell
Electromagnetic wave travels in space in a form of wave as fast as the speed of light
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Heinrich Hertz
Discovered the electromagnetic wave
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Ampere’s Law
mathematically describes the magnetic force between 2 electric currents
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speed of em waves
3 x 10^8 m/s
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electromagnetism
a changing magnetic field produces an electric field (vice versa)
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EM Waves
can travel in both medium and vacuum
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Oscillation
back and forth movement between two positions or states of an object
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mirror
smooth reflecting surface coated with metallic substance
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reflection
bouncing off of light rays
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incident ray
ray of light approaching the mirror represented by an arrow approaching an optical element
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reflected ray
ray of light which leaves the mirror
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Specular or Regular Reflection
smooth surface
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Diffused or Irregular Reflection
rough surfaces
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Curved Mirror
reflecting surface in which its surface is a section of sphere
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Concave Mirror or Converging Mirror
reflective surface bulges away from the light source
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Convex Mirror or Diverging Mirror
reflective surface bulges towards the light source
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Refraction
bending of light as it passes from one transparent substance into another.
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Lenses
made of transparent substance which can bend light rays