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Showing 1 - 10 of 45
Showing 1 - 10 of 45
Infrared
The term "infrared" refers to a broad range of frequencies, beginning at the top end of those frequencies used for communication and extending up the the low frequency (red) end of the visible ...
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Crossover Network
Most loudspeakers use multiple drivers and employ crossover networks to route the appropriate frequency ranges to the different drivers. Combinations of capacitors, inductors, and resistors can ...
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Atomic Clock
Very accurate clocks can be constructed by locking an electronic oscillator to the frequency of an atomic transition. The frequencies associated with such transitions are so reproducible that the ...
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Bandwidth
When you quote a frequency for a radio station, you generally quote the frequency of the carrier. But when you superimpose a signal on the carrier by AM or FM, you produce sidebands at the sum and ...
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Coupled Resonant Pendulums
Every pendulum has a natural or resonant frequency, which is the number of times the pendulum swings back and forth per second. The resonant frequency depends on the pendulum's length. Longer ...
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Resonant Frequency
This Hyperphysics page discusses resonance and resonant frequencies. Includes the example of a child's swing.
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White Noise
White noise is noise whose amplitude is constant throughout the audible frequency range. It is fairly easy to produce white noise - it is often produced by a random noise generator in which all ...
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Very Low Frequency (VLF) Research
Explanation of the work of the VLF group in studying the occurrence and propagation of very low frequency radio waves in the earths atmosphere
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Planck's Hypothesis
In order to explain the frequency distribution of radiation from a hot cavity (blackbody radiation) Planck proposed the ad hoc assumption that the radiant energy could exist only in discrete quanta ...
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Pitch
The perceived pitch of a sound is just the ear's response to frequency, i.e., for most practical purposes the pitch is just the frequency.
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Showing 1 - 10 of 45