# Backward wave

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### ☑️ How does a backward wave oscillator work?

The BACKWARD-WAVE OSCILLATOR (BWO) is a microwave-frequency, velocity-modulated tube that operates on the same principle as the Traveling Wave Tube. However, a traveling wave that moves from the electron gun end of the tube toward the collector is not used in the BWO. Instead, the BWO extracts energy from the electron beam by using a backward wave that travels from the collector toward the electron gun(cathode). Otherwise, the electron bunching action and energy extraction from the electron beam is very similar to the actions in a Travelling Wave Tube. The typical BWO is constructed from a folded transmission line or waveguide that winds back and forth across the path of the electron beam, as shown in figure. The folded waveguide in the illustration serves the same purpose as the helix in a Traveling Wave Tube(TWT). The fixed spacing of the folded waveguide limits the bandwidth of the BWO. Since the frequency of a given waveguide is constant, the frequency of the BWO is controlled by the transit time of the electron beam. The transit time is controlled by the collector potential. Thus, the output frequency can be changed by varying the collector voltage, which is a definite advantage. As in the TWT, the electron beam in the BWO is focused by a magnet placed around the body of the tube.

Question from categories: slow wave structure travelling wave tube backward wave oscillator diagram backwards hand wave

### ☑️ What makes a wave move forward or backward?

• You can see the spring or slinky move forward and backward for a sometime. Those are waves! Slinky or the spring is the propagation medium. Particles of the medium move periodically after a wave is flowing through a medium. Particles of the medium may move any direction forward, backward, upward or downward.

### ☑️ What makes a z wave device backward compatible?

• Z-Wave devices have a feature that makes them ‘backward compatible’. This means that even if the said machine has been updated to S2, it can be reverted back to S0. It leaves the products most vulnerable to being downgraded to S0 during the pairing process, without giving any alarms to the user.

### ☑️ Which is the best description of a backward wave oscillator?

• 8. backward wave oscillator (BWO) • A backward wave oscillator (BWO), also called carcinotron (trade name) or backward wave tube, is a vacuum tube that is used to generate microwaves up to the terahertz range. • It belongs to the traveling-wave tube family. • It is an oscillator with a wide electronic tuning range

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## Top 29572 questions from Backward wave

We’ve collected for you 29572 similar questions from the «Backward wave» category:

### What wave are electromagnetic wave?

Electromagnetic waves include radio waves, microwaves, infrared radiation, visible light, ultraviolet radiation, x-rays, gamma rays.All of these are really the same thing (at least, for a physicist); the difference is in frequency, and the amount of energy per photon.

### What travels faster p-wave s-wave surface wave?

• A P wave is a longitudinal wave and travels the fastest. It can travel through solids and liquids. An S wave is a transverse wave and travels slower than a P wave, thus arriving after the P wave. S waves can only travel through solids, and as a result do not travel through the liquid core of the Earth.

### What travels fast p-wave s-wave surface wave?

Primary waves (P-waves) are compressional waves that are longitudinal in nature. P-waves are pressure waves that travel faster than other waves through the earth to arrive at seismograph stations first, hence the name "Primary"… In air, they take the form of sound waves, hence they travel at the speed of sound.

primary

### Constructive wave interference occurs when wave troughs meet wave crests.?

• Constructive interference occurs when the crests of one wave overlap the crests of the other wave, causing an increase in wave amplitude. Destructive interference occurs when the crests of one wave overlap the troughs of the other wave, causing a decrease in wave amplitude.

### Is p wave larger s wave surface wave or tsunamis?

Neither. P and S waves are body waves. Tsunamis are a different matter entirely.

### Is a mexican wave a transverse wave or compression wave?

It is a tranverse wave. hope this helps

### Which wave does most damage p wave or s wave?

A p wave because it can move so fast with more force. P waves cause little damage, they are compressional waves. They are at a higher frequency and a lower amplitude than surface waves which are shear waves. S-waves cause the most damage because they are slow moving and have an amplitude much greater than P-waves.

### Does wave type affect wave velocity?

• The data convincingly show that wave frequency does not affect wave speed. An increase in wave frequency caused a decrease in wavelength while the wave speed remained constant. The last three trials involved the same procedure with a different rope tension.

### Is primary wave the fastest wave?

i think so.. :/ Travel fastest through rock material causing rock particles in the rock to move back or forth

### A gravitational wave is a ___________ wave?

A gravitational wave is an invisible (yet incredibly fast) ripple in space. Gravitational waves travel at the speed of light (186,000 miles per second). These waves squeeze and stretch anything in their path as they pass by. A gravitational wave is an invisible (yet incredibly fast) ripple in space.

### Is a transverse wave light wave?

it sure is!!yes, light waves is a transverse wave.

### What is sine wave wave length?

Wavelength is the distance from any point on a wave to the same point on the next wave. The shape of the wave doesn't matter.

### Rouge wave when wave trough meet?

• When the crest and trough of two different waves meet head-on, they can cancel each other out, resulting in a flat sea. But when two crests run into each other, they form a huge wave that is the sum of both wave heights—a rogue wave that towers above other nearby waves.

### Incoming wave is the incident wave?

The incoming wave is called the incident wave.

### Are electromagnet wave is radio wave?

yes, electromagnetic wave is a radio wave

### When was wave on wave created?

Wave on Wave was created in 2002.

### What is a sound wave wave?

Sound is a mechanical wave that results from the back and forth vibration of the particles of the medium through which the sound wave is moving… The motion of the particles is parallel (and anti-parallel) to the direction of the energy transport. This is what characterizes sound waves in air as longitudinal waves.

### Is light wave an electromagnetic wave?

The terms light, electromagnetic waves, and radiation all refer to the same physical phenomenon: electromagnetic energy… Radio and microwaves are usually described in terms of frequency (Hertz), infrared and visible light in terms of wavelength (meters), and x-rays and gamma rays in terms of energy (electron volts).

### Why does t wave has wave?

The T wave is representative of the repolarization of the membrane. In an EKG reading, the T wave is notable because it must be present before the next depolarization. An absent or strangely shaped T wave may signify disruption in repolarization or another segment of the heartbeat.

### What makes a wave a wave?

• Waves are created by energy passing through water, causing it to move in a circular motion. However, water does not actually travel in waves. Waves transmit energy, not water, across the ocean and if not obstructed by anything, they have the potential to travel across an entire ocean basin. Waves are most commonly caused by wind.

### Does wave type effect wave velocity?

Both Wave A and Wave B travel at the same speed. The speed of a wave is only altered by alterations in the properties of the medium through which it travels… The wavelength of a wave does not affect the speed at which the wave travels. Both Wave C and Wave D travel at the same speed.

### What is standing wave stationary wave?

A standing wave is also known as a stationary wave. It is a wave that remains in a constant position. This phenomenon can occur because the medium is moving in the opposite direction to the wave, or it can arise in a stationary medium as a result of interference between two waves traveling in opposite directions.

### How does the ocean wave wave?

gravity of course!

### Is radio wave an electromagnetic wave?

Radio waves have the longest wavelengths in the electromagnetic spectrum. They range from the length of a football to larger than our planet… The radio "receives" these electromagnetic radio waves and converts them to mechanical vibrations in the speaker to create the sound waves you can hear.

### Was wave rock once a wave?

No. Wave Rock, in Western Australia, was believed to have been formed by the combination of chemical weathering in the subsurface, before Wave Rock was even fully exposed, together with gradual fluvial erosion of the softer granite beneath the upper surface.

### A plane wave is a wave?

• A plane wave is a wave that propagates through space as a plane, rather than as a sphere…

### Which wave is a body wave?

A body wave is a seismic wave that moves through the interior of the earth, as opposed to surface waves that travel near the earth's surface. P and S waves are body waves. Each type of wave shakes the ground in different ways.

### What is carrier wave modulated wave?

In telecommunications, a carrier wave, carrier signal, or just carrier, is a waveform (usually sinusoidal) that is modulated (modified) with an information-bearing signal for the purpose of conveying information. This carrier wave usually has a much higher frequency than the input signal does.

### Is light wave a periodic wave?

Light, and other electromagnetic waves, do not require a medium; we'll deal with those later in the semester. Waves can be broadly separated into pulses and periodic waves. A pulse is a single disturbance while a periodic wave is a continually oscillating motion.

### Is radio wave a light wave?

No, it is actually a microwave wave.

### Wave length of a wave is?

is the distance between two vibrations or pulses of the wave..it is expressed by lamda λ and measured in m . it is equal to = v x t = v/f v= speed of wave t= period f= frequency

### What makes an ocean wave wave?

air and water, answer is true trust me for once!!

### Is ocean wave a mechanical wave?

Ocean waves and water waves are mechanical waves (because they move through the medium of water).

### Is sound wave a longitudinal wave?

Sound waves in air and fluids are longitudinal waves, because the particles that transport the sound vibrate parallel to the direction of the sound wave's travel.

No....

### Which wave is not electromagnetic wave?

Mexican Wave? A non-electromagnetic wave.

ewan k0e !

### Why is wave rock a wave?

When the land surface, which is underlain by deeply weathered bedrock, around an inselberg is lowered by erosion, the pocket of deeply weathered disaggregated bedrock is also removed to produce a flared slope such as Wave Rock.

### What wave is a light wave?

#### Electromagnetic waves, including visible light, are made up of oscillating electric and magnetic fields as shown. The wavelength of a wave is the distance between successive peaks or troughs of a wave. ... Light as a Wave.

.01 nm to 10 nmX-Rays
smaller than .01 nmGamma rays

### Is a sonic wave a tranverse wave or a longitudinal wave?

A longitudinal wave.

### Which wave has more frequency a radio wave or infrared wave?

infrared wave has more frequency than a radio wave

### Is light a mechanial wave or an electromagnetic wave a tranverse wave or a compressional wave?

electromagnetic, transverse

### De wave?

• De Wave is a marine contractor that specializes in cruise ship interiors, providing both new build and refit services to ship builders and cruise operators. The company specializes in all aspects of ship interiors, including cabins, bathroom units, galley catering systems and public areas.

### Is an electromagnetic wave a mechanical wave?

No. They are two different types of waves. Mechanical waves require a medium, such as air, to travel through. Electromagnetic waves do not need a medium to travel through.

### What kind of wave is light wave?

Light waves are just one type of electromagnetic wave. Other electromagnetic waves include the microwaves in your oven, radio waves, and X-rays. Light waves are regarded as a varying electric field (E) coupled with a varying magnetic field (B), at right angles to each other and to the direction of travel.

### Is a p-wave a seismic wave?

Yes. P-waves are known as primary waves and are a compressional or longitudinal wave.

### What type of wave is wave a?

• Wave A wave is a disturbance in a medium that carries energy without a net movement of particles. It may take the form of elastic deformation, a variation of pressure, electric or magnetic intensity, electric potential, or temperature.