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Two-Slit Interference, One Photon at a Time Newsletter – Cricket Makes Photon Arrivals Audible  NOTE: For photon counting, this instrument requires an electronic counter with a frequency range of at least 0 - 1 MHz such as the B+K 200 MHz Universal Counter. Photomultiplier tube: Hamamatsu R 212 All Slit Widths: 0.09 mm Double Slit Separations: 0.35, 0.40, 0.45 mm Laser (Class II): 670 ± 20 nm<1.0 mW |
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