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| 9179975521 | beats | periodic variation in the loudness of sound abs value (F1 - F2) -when two waves of slightly different freq are superimposed | 0 | |
| 9179982744 | double slit experiment | proved that electrons have wave like properties (wave length) -the strips of electrons are called maxima (1st order, 2nd order, etc) CENTRAL MAXIMA -the strips w/o electrons are called minimum (1st order etc) -central maxima is 0 wL -each maxima add 1 wL -each min is 5 wL | 1 | |
| 9180039349 | interference examples | rainbow on a CD, oil on top of waer -interference produces a brightness or a color | 2 | |
| 9180061508 | constructive/destructive interference examples | moving back and forth, or side to side and hearing sound get louder or softer | 3 | |
| 9180074037 | perfectly constructive/destructive | when the waves perfectly line up | 4 | |
| 9180083649 | when you're equal distance from two speakers | constructive interference | 5 | |
| 9180119443 | when you're equal distance from two speakers + .5wL | destructive interference | 6 | |
| 9180125313 | when you're equal distance from two speakers + 1 wL | constructive interference | 7 | |
| 9180130930 | multiple of .5 wL | destructive interference | 8 | |
| 9180153838 | Vstring | wLf or (Ft/m/l)^.5 | 9 | |
| 9180166079 | what mainly affects speed of a wave | medium | 10 | |
| 9180175305 | antinode | A point of maximum amplitude on a standing wave -constructive |  | 11 |
| 9180178462 | node | A point of zero amplitude on a standing wave -destructive | 12 | |
| 9180183256 | standing wave | two identical traveling waves moving in opposite directions create a standing wave -peaks and troughs stay in place as it oscillates -also produced on a string when both ends are fixed -.5wL between nodes -displacement at both ends must be 0 | 13 | |
| 9180269791 | open-open tube | 1st harmonic, 2nd harmonic, 3rd harmonic, etc .5 wL, 1 wL, etc. | 14 | |
| 9180294108 | open closed tube | 1st harmonic, 3rd harmonic, 5th harmonic .25 wL | 15 | |
| 9180352607 | fundamental frequency | the lowest frequency of vibration of a standing wave | 16 | |
| 9180363935 | resonance | A phenomenon that occurs when two objects naturally vibrate at the same frequency -standing waves have series of frequences it "wants" to oscillate at (the frequencies of different standing wave modes) | 17 | |
| 9186033721 | sound wave | longitudinal, mechanical | 18 | |
| 9186035375 | light wave | transverse, em | 19 | |
| 9186063155 | wL of standing wave | 2x the distance between nodes or antinodes | 20 | |
| 9186093397 | the amplitude of a wave reflected from a boundary is | unchanged | 21 | |
| 9186122254 | wL | =2L/m | 22 | |
| 9186134191 | Fm= | mode(v/2L) | 23 | |
| 9186140936 | the mode number is equal to | the number of antinodes of the standing wave | 24 | |
| 9186167369 | Fm= | mf1 (f1 is fundamental freq) -allowed standing wave frequencies are all integer multiples of the fundamental freq | 25 | |
| 9186173799 | harmonics | the sequences of possible frequencies | 26 | |
| 9186268526 | node in open tube | the open end of a column of air must be a node of the pressure wave | 27 | |
| 9186285932 | for open-closed tube | you find the harmonic by doubling the number of antinodes | 28 | |
| 9186296381 | the fundamental freq of an open closed tub is | half that of an open open tube of the same length | 29 | |
| 9187144807 | two waves will be in phase and will produce constructive interference any time their path length difference is | a whole number of wavelengths (d2 - d1) | 30 | |
| 9187161683 | two waves will be out of phase and will produce destructive interference any time their path length difference is | a whole number of wavelengths plus half a wavelength | 31 |
