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Why the phase velocity in a waveguide can exceed the velocity of light?
Wiki User
∙ 15y ago
Guide wavelength is defined as the distance between two equal phase planes along the waveguide. The guide wavelength is a function of operating wavelength (or frequency) and the lower cutoff wavelength, and is always longer than the wavelength would be in free-space. Here's the equation for guide wavelength:Guide wavelength is used when you design distributed structures in waveguide. For example, if you are making a PIN diode switch with two shunt diodes spaces 3/4 wavelength apart, use the 3/4 of a guide wavelength in your design. The guide wavelength in waveguide is longer than wavelength in free space. This isn't intuitive, it seems like the dielectric constant in waveguide must be less than unity for this to happen... don't think about this too hard you will get a headache. === ===
Wiki User
∙ 15y ago
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When a wave travelling in air enters into a waveguide The phase velocity will increase?
increases
What is group velocity and phase velocity?
yes
What is phase velocity?
The velocity of a point that moves with a wave at constant phase. Also known as celerity; phase speed; wave celerity; wave speed., wave velocity.
What is wave velocity and particle velocity?
The speed the wave is traveling through space
Why do light waves with the same wavelength and constant phase difference interfere with eacher to produce light and dark interface patterns?
If their phase difference is constant, then they don't produce light and dark patterns. Light spots are produced where the two sources are in phase, and dark spots where they're out of phase.
When a wave travelling in air enters into a waveguide The phase velocity will increase?
increases
Can phase velocity exceed the speed of light?
Yes it can, because the phase velocity of a matter wave does not carry information, and thus does not violate special relativity. The group velocity is what is limited by c.
What is group velocity and phase velocity?
yes
What is phase velocity?
The velocity of a point that moves with a wave at constant phase. Also known as celerity; phase speed; wave celerity; wave speed., wave velocity.
Drift velocity in two-phase flow?
it is the relative velocity of two phase that is gas and liquid.
What is the difference between group velocity and phase velocity in a stationary wave on a string?
The velocity of a wave which maintains consatnt phase at all successive positions during propogation is known as wave velocity or phase velocity. The velocity of a group of waves which maintains constant poditions during the propogation is known as group velocity.
What is light refraction on Earth?
The refractive index of water is 1.333. Refractive index n = c/v where c is phase velocity of a wave in a vacuum and v is the phase velocity of the wave in the medium. If precision is needed, then more variables come into play and n will change slightly. The temperature of the medium, the frequency of the light, etc... all can come into play.
What is wave velocity and particle velocity?
The speed the wave is traveling through space
Photosynthesis occurs in two steps which are?
light independent phase and light dependent phase
Why is it necessary to call dark phase of photosynthesis as light independent phase?
there is a reason. it does not need light.
The speed at which a wave travels through water or other medium?
Phase velocity.
Why do light waves with the same wavelength and constant phase difference interfere with eacher to produce light and dark interface patterns?
If their phase difference is constant, then they don't produce light and dark patterns. Light spots are produced where the two sources are in phase, and dark spots where they're out of phase.
