Zusammenfassung der Ressource
HSC Scientists
- Galileo
- Analysed projectile
motion
- Parabolic
motion
- Seperate vertical and
horizontal component
- Kepler
- Kepler's law of
periods
- Heliocentric model
proven
- Orbits were
elliptical
- Orbits could could be
analysed and predicted
- Newton
- Laws of
motion
- Universal law of
gravitation
- Full understanding and analysis of motion
- Understanding of motion of celestial
bodies
- Michelson and
Morley
- Relative speed of earth through the
Aether
- Experiment
- Null result fuelled scepticism for Aether
model
- Einstein
- Special relativity
- C is constant, time and space are
relative
- E = m c^2
- Energy and mass
equivalent
- C is universal speed
limit
- Length, time and mass
dilation
- Explanation of photoelectric
effect
- Wave - particle duality of
light
- De Broglie's
theory's
- Photo and solar cell development
- Faraday
- Electromagnetic induction
- Change in magnetic flux in
conductor creates produces EMF
- Electricity / electric
motors/generators
- Lenz
- Lenz's
Law
- Induced currents flow in a direction that
create a magnetic field that opposes the
motion that cause the change in flux
- J.J.
Thompson
- Discovered
electron
- Experiment
- Cathode rays have
rays
- First insight into atomic
structure
- Hertz
- Radio
waves
- Speed of
light
- Wireless
technology
- Experiment
- Light part of bigger spectrum
- Plank
- Quantised energy
- Solved UV catastrophe
- Rutherford
- Nucleus
- Dense,
positive
- Mostly empty
space
- Further insight atomic
structure
- Experiment
- Braggs
- X-ray diffraction
crystallography
- Arrangement of atoms in
crystal
- Sea of
electrons
- Experiment
- Bohr
- Bohr's postulates
- Electrons only in fixed orbits (positions and
energy), quantised, no radiation emitted.
- Release/absorb energy when moving shells
- Angular momentum is quantised
- Davison and
Germer
- Proof of De
Broglie
- De Broglie
- Wave-particle of
matter
- Only at quantum
level
- Stability of electron
orbits
- Heisenberg
- Uncertainty
principle
- Particle wave duality means impossible to know
everything about any particle at any moment
- Chadwick
- Discovered neutron
- Conservation of energy
- Pauli
- Exclusion principle
- No two electrons in an atom can have
identical quantum numbers
- Neutrino/anti -
neutrino
- Reason for varying
energy levels in beta
emissions
- Further standard
model of matter
- Fermi
- Discovered fission
- Formed transuranic elements
- Controlled nuclear fission
- Bohr
- Quanta to atomic model
- Analysis
- Electrons in certain orbits and
energy levels, quantised and
doesn't;t emit energy
- When moving orbits, release or absorb quantum of
energy
- Angular motion is quantised, mvr =
nh/2pi