Timeline Activity Physics

Andrew Nichol- Mr. Ingram

Main

Copernicus

1530

founded the Heliocentric theory of the solar system in which the Earth rotated around the sun

Kepler

1600

mathematically predicted movement of planets. Supported Copernicus theory of heliocentric solar system.

Galileo

1615

used a refracting telescope to show the Earth revolves around the sun--the Heliocentric theory

Snell

1660

Snell's law defined the angle of refraction of light as it passed through a substance

Hooke

1670

measured distance to stars, defined the law of elasticity and alternating principle of gravity.

Newton

1687

defined the Three Laws of Motion and gravity. Invented Calculus and defined how sunlight was made up of several colors

Franklin

1780

invented bifocal glasses, the lightening rod and theorized that the storm lightening was the same nature as the static electricity developed in his lab

Avogado

1810

stated Avogado's law which says that an equal number of molecules of gas exist in containers of the same volume, pressure and temperature. Called the 'Ideal Gas Law'

Ampere

1820

Ampere's Law. Defined the AMP which was a fore-runner of the electron concept.

Joule

1840

defined Joule's law which is the relationship between heat, current flow and resistance

Ohm

1841

defined 'Ohm's Law' which states that the resistance of a conductor is inversely proportional to the voltage

Doppler

1842

defined the Doppler effect in which the received frequency changes with the movement of the source

Kelvin

1848

defined the temperature absolute 0 null point at which there is no molecular movement at -273 degrees Celsius. This unit is named Kelvin

Watt

1880

defined the unit of work measurement, the Watt. For example, an average person working in a day is the power/work of 85 watts

Hertz

1887

defined electricity can be transmitted in electromagnetic waves. Hertz unit standard. Also, by accident discovered the photoelectric effect

Tesla

1891

Developed alternating current machines which were more efficient than direct current machines. He also developed the first fluorescent lights. Tesla did not get along with his early manager, Thomas Edison, so he did his inventions for Westinghouse

Einstein

1905

defined light's particle nature, the photon, and the 'Theory of Relativity'