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Aug 2, 1543
Copernicus proposed a heliocentric model of the Universe
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Jun 27, 1576
Tycho Brahe made precise measurements of the stars
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William Gilbert suggests that the Earth has a magnetic field
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Kepler observes an exploding star and calls it a Supernova
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Francis Bacon writes book telling people that magic is not real.
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Galileo identifies parabolic motion
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Johannes Keppler proposed 3 laws about the solar system
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Snell's Law of Refraction
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Galileo noted that Energy was transformed
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First vacuum pump invented
Found that sound does not travel in a vacuum. -
Great Plague kills 70000 - World Population approx 550000000
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The Devil sighted in Scotland - mass panic
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Momentum defined
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Newton publishes laws of Motion and Laws of Gravity
Gravity explained Kepler's observations on the behaviour of satellites. -
Newton published Cannon thought experiment
Concept of escape velocity -
Franklin proves that lighning is electricity
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John Hill discovers that smoking causes cancer.
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First Powered Vehicle - 3 wheel steam tractor.
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Galvani Frog experiment
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Metric System Introduced in France
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First Immunisation
Edward Jenner vaccinated a child against smallpox. -
World Population 900000000
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Voltaic Pile - First Battery
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First Steam Locomotive built
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Oersted links Electricity and Magnetism
This was the beginning of stored electricity. -
Ohm's Law was developed
R=V/I -
Ampere identifed F/l for parallel wires
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First Dynamo - generator
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Lenz's Law developed
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Elecric Telrgraph invented
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The Doppler Effect was proposed
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Kelvin scale was defined
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Kelvin defines absolute zero
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Maxwell's Laws were proposed
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Internal Combustion Engine invented
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Bell invents telephone
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Edison invents Phonograph
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Edison invented the lightbulb
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Household lights developed/introduced
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Publication of the Cathode Ray argument
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Edison vs Westinghouse War of the Currents
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First commercial transformer.
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Hertz's Radio Wave experiment
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Michelson-Morley Experiment
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Tesla patented the AC Motor
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Rontgen discovers X-Rays
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JJ Thomson q/m ratio experiment
Proved cathode rays were negatively charged particles with a mass 1/1800 of the mass of a proton (Hydrogen nucleus) -
World Population 1900000000
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Planck and Blackbody radiation
Planck proposed that E=hf -
Lenard and Stopping Voltage
Lenard used the stopping voltage (qV) to measure the kinetic energy of electrons released by the photoelectric effect. -
Tsiolkovsky Paper Published about space rocketry
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Wright Brothers fly the first plane
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Einstein iproposed that light is a wave of photons
This was the birth of quantum physics. Einstein used Planck's formula to explain the photoelectric effect. -
Einstein Proposes Special Relativity
Einstein & Speed of LightEinstein used a Gedanken about an observer on a train and another on the platform to analyse the speed of light through the aether. He decided that 2 apparently contradictory results would both occur. He stated that the speed of light is the same in all frames of reference, hence people in inertial frames of reference in relative motion will experience space and time differently. -
Triode valve invented
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Onnes discovered that mercury is a superconductor
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Superconductivity experimented by Heike Onnes
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Braggs X-rayed Crystals
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Goddard Published book about solid fuel rockets
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Friedmann published Big Bang Model
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Cosmic Microwave Background radiation measured
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BBC begins radio broadcasts
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oberth published maths of Escape Velocity
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de Broglie model (energy levels) of the atom developed
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First Television pictures broadcast
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Goddard published article about liquid propellant rocket
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Fleming discovers penicillin.
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Hubble shows the universe is expanding
Hubble identified that the spectrum of distant stars is redshifted and related this to the doppler effect. -
Meissner Effect discovered
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Superconducting compounds discovered
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Transistors discoverd
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BCS Theory developed
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Sputnick - first satellite - launched by Russia
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First Silicon chip
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Von Braun launched the West's first satellite
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Solid State developed
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Yuri Gagarin is the first man to orbit the moon
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Cosmic Microwave background radiation detected
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Man on Moon
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Time Dilation proved
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First Microprocessor
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First PC's by Apple
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CD's introduced
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High Temperature Superconductors