Electrons, waves, and photons: Waves 2 Flashcards
what is the principle of superposition of waves
when two waves meet at a point in space, the resultant displacement at that point is equal to the sum of the displacements of the individual waves
define coherance
coherance is when 2 waves have the same frequency and onstant phase difference
what is the path difference and phase difference for a 1st order minima
path difference: 1/2λ
phase difference π
what is the path difference and phase difference for a 1st order maxima
path difference:λ
phase difference 2π
what is the path difference and phase difference for a 2nd order minima
path difference:3/2 λ
phase difference 3π
what is the path difference and phase difference for a 2nd order maxima
path difference:2 λ
phase difference 4π
what did the Youngs double slit experiment show
the wave light property of waves and how they interfere.
how is a stationary wave formed
when two coherent waves with the same frequency (and similar amplitudes) traveling in opposite directions superpose.
what is a node on a stationary wave
a point in space where displacement is always zero
what is a antinode on a stationary wave
the point of greatest amplitude
what is special about the energy transfer of a stationary wave
there is no net transfer of energy
between adjacent nodes, are all particles in phase with each other
yes the particles are in phase as they all reach their individual maximum displacement at the same time
define the fundemental frequency
the minimum frequency of a stationary wave
how does frequency change when changing harmonics
integer multiples of the fundamental frequency
for a stationary wave in a column which is open at both ends, what does the shape of the first harmonic look like
2 antinodes and 1 node with the antinodes at the edge of the tube
for a stationary wave in a column which is closed at one end, what does the shape of the first harmonic look like
antinode at the open end and a node at the closed end
