Universal Physics

Practising making Rev. Cards and learning Physics at the sametime ^^

I'm adding as I go along so watch this space :)

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  • Created by: Halimah
  • Created on: 01-03-12 19:43

Geocentric Model

  • Introduced by Ptolemy
  • Sun, Moon, Planets & Stars orbit Earth
  • Orbits=Perfect circles
  • Accepted model from Ancient Greeks - 1500's
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Heliocentric Model

  • Introduced by Copernicus in 1543
  • Earth & all Planets orbit the Sun
  • Model condemned Church - went against their preachings
  • Proven by Galileo - under house arrest
  • Jupiter has Moons = Not everything orbits Earth= Geocentric wrong
  • Orbit is elliptical (oval)
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Wave Shape

  • (http://myglowingpickle.com/waveducks2.gif)
  • Frequency: Amount of complete waves per second
  • 1Hz: 1 Wave, 1kHz: 1000 Hz, 1MHz: 1 000 000Hz
  • Amplitude: Wave height 
  • Wavelength: Distance between 2 peaks/troughs
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Wave Formula 1

(http://www.suntrek.org/images/speed-frequency-wavelength-.gif)

  • Speed (velocity) = Frequency x Wavelength
  • Frequency = Speed / Wavelength
  • Wavelength = Speed / Frequency
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Wave Formula 2

(http://www.bbc.co.uk/scotland/learning/bitesize/standard/maths_i/images/g_dst_triangle.gif)

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