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-500-300 BC
-Particle
-Greeks
-thought light came from the eyes in high speed particles |
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-500 BC
-Particle
-Greek
-light came from luminous objects |
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-1675
-Particle
-Danish
-calculated the speed of light--3x10^8 m/s |
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-490 BC
-Wave
-Greek
-said light was a wave; rectilinear propagation(travels in straight lines) |
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-1665
-Wave
-England
-first modern man to come up with a wave theory; said I think light is a wave |
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-1685
-Wave
-Dutch
-Father of waves; takes all 3 properties (refraction, defraction, dispersion) and explains as wave; said light will go slower as density increases |
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-1704
-Particle
-England
-corpuscles thory--light is differently sized particles; light is faster in water than in air; dispersion |
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-1801
-Wave
-England
-single slit and double slit interference pattern; first major blow to corpuscular model |
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-1850
-Wave
-France
-speed of light in water is slower than air
-2nd major blow to corpuscular model |
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Definition
-1862
-Wave
-Scotland
-realized light is an electromagnetic wave; Maxwell equations |
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-1887
-Wave?
-USA
-interferometer picks up disturbances; wanted to search for eather in space, but never found it |
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-1900
-Duality
-Germany
-Father of Quantum Theory; introduced idea of quanta (discreet bundles of energy) |
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-1916
-Duality
-USA
-verified Einstein's explanation of the photoelectric effect |
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Definition
-1905
-Duality
-Germany & USA
-5 papers--oen was called the photoelectric paper and explained the photoelectric effect, which says light behaves as photons (little bundles of energy); photons behave like particles, but also like waves; introduces duality |
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-1924
-Duality
-France
-all matter is duality--wave and particle
-electrons are everything are waves and particles |
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| Intensity varied with distance |
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