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Q: What is fermi wave vector of fermi gas in one dimension box of length L?
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What is fermi wave vector for one dimension box of length L?

N = 2k/(2pi/L) so k = pi.N/L


Is wave a vector quantity?

Yes


Is amplitude a vector or scalar quantity?

Yes, because amplitude is the maximum displacement of a wave from its rest position and displacement has direction and it's a vector. hence, amplitude is a vector. That is a bit like saying a weigh scale is a vector, because it goes up and down as you get on and off it. As with weight, pressure, etc, amplitude is the scale of wave magnitude against which particular waves are measured. Frequency is the vector, because you are measuring from one peak to the next, so the "length" gives it "direction," ie. a vector.


What are principal planes in antenna wave propagation?

The principal plane in wave propagation is the E-plane and the H-plane of an antenna. The E-plane consists of the electric field vector, and by convention, it's the direction in which the wave is said to be 'polarized'. The H-plane consists of magnetic field vector of the wave. The electric field vector and the magnetic field vector are perpendicular to each other, and the direction in which the wave propagates (moves) is perpendicular to both of them.


If you know the wavelength of an electromagnetic wave in a vacuum you can calculate its?

Momentum, energy, frequency, and wave number (but not wave vector.)


What happens to a wave when you decrease the wave length?

When you shorten the wave length, you increase the amplitude.


What happenes to the wave when you decrease the wave length?

When you shorten the wave length, you increase the amplitude.


What type of light has a longer wave length ultra violent or infrared?

Ultraviolet has the longer wave length Infrared has the lower wave length


How is a waves frequency related to a waves length?

The product of the wave's frequency and the wave's wave length is equal to the speed of propagation of the wave.


What is the length of full wave?

The length of a full cycle of a wave is called a "wavelength".


If a wave has a low frequency how do you describe the wave length?

The frequency of a wave is not directly related to the wave length. A low frequency wave or a high frequency wave may be either long-wave or short-wave.


What is the wave length of standing wave?

it depends on the size of the wave