Physics Scientists

Physics Scientists

1. Robert H. Goddard

   • Gyroscopically controlled navigation
   • Rockets work in vacuum
   • First gasoline and liquid nitrous oxide fuel
   • Multi-staged rockets

2. Heinrich Hertz

   • Theory
     • EMR
       • EMR's have different frequencies
       • Speed of light
       • Transmitted/received
       • Travel non-conductive materials absorb conductive matertials
       • Polarised
       • Transverse
   • Proof
     • Circuit with induction coil generates spark, emitting EMF
       • Secondary circuit catches EMF and a spark is induced
   • Impact
     • Proved Maxwell's equation
     • Lead to radio communication and more EMF's

3. J.J. Thomson

   • Theory
     • Cathode rays consist of common particles
   • Proof
     • Measured angle of deflection
     • Calculated mass to charge ratio, various gases
   • First mass spectrometry

4. Rutherford

   • Positive mass at centre in atom
   • Negative charges orbit atom
   • Why electron not fall into centre
   • Gold foil experiment
     • fired alpha particles at piece of gold foil.