5- Wavelike Properties of Particles Flashcards
proposed the wave-like particle behavior of matter
Louis deBroglie
deBroglie ideas fully expanded and developed by…
Erwin Schrodinger
electron diffraction…
Germer and Davisson accidentally discovered when large crystals formed on nickel scattered electrons.
as deBroglie proposed, Germer and Davisson showed conclusively that…
particles with mass moving at v«c do indeed have wavelike properties.
What’s waving?
probability of finding the particle in given region…
For any type of wave, the position can be determined only at….
the expense of our knowledge of its wavelength.
Heisenberg uncertainty principles:
It is not possible to make simultaneous determination of the position and momentum of a particle with unlimited precision.
It is not possible to make a simultaneous determination of the energy and the time coordinate of a particle with unlimited precision.
Principle of Complementarity
Both particle and wave characteristics of a particle must be considered properties of the particle.
If you know the wave nature, you cannot know the particle nature. If you know the particle nature, you cant know the wave nature.
zero-point energy
The minimum average kinetic energy for a particle in a 1-D (or any) “box” cannot be zero. Rather, it is the zero-point energy.
a classical particle…
can be localized or scattered, exchanges energy suddenly in a “lump” and obeys the laws of conservation of energy/momentum in collisions.
does not exhibit interference and diffraction.
a classical wave…
behaves like a water wave. it exhibits diffraction and interference patterns and has its energy spread out continuously in space and time (not quantized in “lumps.”)
matter and radiation have…
both particle and wave aspects.
when emission and absorption are being studied, it is the…
particle aspects that dominate.
when matter and radiation propagate through space…
wave aspects dominate.
observations of matter and radiation are described in terms of…
particle aspects.
