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S wave

Astronomy S StarSabik

S waves (NASA Thesaurus) Waves in an elastic media which cause an element of the medium to change its shape without a change in volume. Mathematically, S waves are ones whose velocity field has zero divergence.

 


S waves are like waves in a jerked rope---matter moves up and down or side to side. Liquid matter prevents S waves from spreading.

S wave - (n.)
A type of seismic wave that is a transverse, or shear, wave, and which can travel only through rigid materials.
synchotron self-absorption - (n.) ...

Titan's Waves?
Multiple upper stratospheric haze layers are evident in this ultraviolet view from Cassini looking toward Titan's south pole.

Hawking's wave function of the universe, he and others have claimed, shows how our universe could have come into existence without any relation to anything existing prior to it, i.e., could have come out of "nothing.

Continuous Wave (CW) transmission is when there is an electromagnetic carrier wave present and the message signal, be it voice, video or data, is impressed upon the carrier by modulating its amplitude, phase or frequency.

Wilmington's Wave Transit operates six bus lines within the city as well as five shuttles to nearby areas and a downtown trolley.

1. If a light's wavelength is increased by a factor of 10, how does its frequency change?

MCW (abbr) = modulated continuous wave. M-display In radar, a display in which target distance is determined by moving an adjustable blip along the baseline until it coincides with the horizontal position of the target signal deflections.

A continuous wave, or CW, was switched on and off by a key to create Morse code, which was heard at the receiver as an intermittent tone. CW is still used, these days primarily by amateur radio operators (hams).
AM radio sends music and voice.

Its wave-length is probably very near 55'71 tenth-metres, and it is very close to, if not absolutely coincident with, a prominent line in the spectrum of krypton.

(a) A property which distinguishes wave-like motions. When a wave is incident upon a barrier which is broken by a narrow slit (of comparable size to the wavelength), then the slit will act as a new isotopic source of secondary waves. [CD99] ...

Quantum mechanics says that even the purest vacuum is not completely empty but is instead a "sea" of energy (known as zero-point energy) which has wave-like fluctuations.

In the previous chapter we saw how light behaves as a continuous wave and how this description of electromagnetic radiation allows us to begin to decipher the information reaching us from the cosmos in the form of visible and invisible light.

In traveling through a prism, light is bent by the glass but the amount of bending depends on the light's wavelength. This is what spreads the white light out into the separate colors.

It's not a continuous wave, but more like a series of waves. Each of the chunks, the photons, has an energy that depends on its wavelength (or, equivalently, frequency). A radio-wave photon has a billionth the energy of an x-ray photon.

If the time of the period of the whistle's wavelength when the train is at rest is T and the period when the train is moving at velocity V is Tm, then if the speed of sound is given by S, ...

In this experiment, the spacecraft modulation was switched off and continuous wave signals were transmitted by the spacecraft along the boresight of the high-gain antenna with linear polarization at 2.

The probability of observing a flavor is equal to the square of the amplitude of its wave. As time goes on, the heights of the resulting flavor waves will change periodically. This is the oscillation.

"We can even clock how quickly this wave is travelling, and it is going about 3,200 kilometres per hour," adds Konstantin Getman, also of Penn State University, who led the research.

Seismic waves generated by an earthquake source are commonly classified into two main types: the P and S waves. Both types are propagated within the Earth.

Anyway, color is percieved according to radiation's wavelength. Red has the longest waves, purple has the shortest. Everything else is in the middle, amazingly enough.

Ring gaps in some Voyager 2 photos, combined with a mysterious wave in one ring, may indicate two of the unseen moons could be 11 miles in diameter. They could be orbiting at 28,200 and 28,800 miles from the center of the planet.

The camera's wavelength range spans from ultraviolet to near-infrared light. The camera's sharp eye and broader viewing area enable astronomers to study the life cycles of galaxies in the remotest regions of the cosmos.

By wave mechanics, the particle's wave has a finite (if small) value outside the barrier, too, giving the particle a finite (if small) probability of materializing there, as if it "tunneled" through.

High-rate recordings are made of the downlink's wave fronts by each station, together with precise timing data.

DIFFRACTION
Diffraction is the ability of a wave to bend around corners. The diffraction of light established its wave nature.

Laplace promoted the same idea in the first and second edition of his book Exposition du Systeme du Monde. It disappeared in later editions. The whole idea gained little attention in the 19th century, since light was thought to be a massless wave, ...

Interstellar hydrogen will emit a characteristic wave with wavelength 21cm. Most of the sources of this wave are gas clouds in the spiral arms.

So if light is a wave phenomenon, then two light sources produce waves that in some places produce large amplitudes and other places produce zero. When to point sources of light are projected onto a screen this wave interference effect produces ...

The helium-neon laser is known for its high frequency stability, color purity, and minimal beam spread. Carbon dioxide lasers are very efficient, and consequently they are the most powerful continuous wave (CW) lasers.

See also: Light, Earth, Time, Wave, Second

Astronomy S StarSabik

 
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