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

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Why is wavelength all you need to know to calculate EM wave frequency in a vacuum?

Frequency and wavelength are inversely proportional in a vacuum, following the equation speed = frequency x wavelength. Since the speed of light in a vacuum is constant, knowing the wavelength allows you to determine the frequency of an electromagnetic wave.


How do you know the speed of an electromagnetic wave in a vacuum?

The speed of electromagnetic waves in a vacuum is the same as the speed of light (which is, in itself an electromagnetic wave). It can be measured by finding the frequency and wavelength of two different waves, and then by that correlation, the speed of the waveform.


How do you know the speed of a electromagnetic wave in a vacuum?

The speed of electromagnetic waves in a vacuum is the same as the speed of light (which is, in itself an electromagnetic wave). It can be measured by finding the frequency and wavelength of two different waves, and then by that correlation, the speed of the waveform.


Is a vacuum still a vacuum if there are electromagnetic waves in the vacuum?

Yes, a vacuum is still a vacuum if electromagnetic waves are present. A vacuum is an area with no matter in it. We know that matter is anything which has mass and takes up space. Electromagnetic waves have no mass, and certianly take up no space. They're energy.


How does the speed of light depend on the wavelength?

The equation relating the velocity, wavelength and frequency of an electromagnetic wave is given byv=f λwhere v - velocity of the em wavef - frequency of the em wave andλ - wavelength of the em wave------------------------------------------------------------------------------------------------It is so important to know that velocity of light depends on the nature of the medium and does not depend on the wavelength.

Related Questions

If you know the vacuum wavelength of any form of electromagnetic radiation you can determine its frequency because?

the speed of light in a vacuum is constant (c = 3.00 x 10^8 m/s). By using the formula c = λ*f (where c is the speed of light, λ is the wavelength, and f is the frequency), you can calculate the frequency when you know the vacuum wavelength of the electromagnetic radiation.


Why is wavelength all you need to know to calculate EM wave frequency in a vacuum?

Frequency and wavelength are inversely proportional in a vacuum, following the equation speed = frequency x wavelength. Since the speed of light in a vacuum is constant, knowing the wavelength allows you to determine the frequency of an electromagnetic wave.


How do you know the speed of an electromagnetic wave in vacuum?

The speed of electromagnetic waves in a vacuum is the same as the speed of light (which is, in itself an electromagnetic wave). It can be measured by finding the frequency and wavelength of two different waves, and then by that correlation, the speed of the waveform.


What is meant by vacuum wavelength?

Vacuum wavelength is the wavelength that is measured if the wave is passing through a vacuum. To get the wavelength in a medium you need to know the refractive index.


How do you know the speed of an electromagnetic wave in a vacuum?

The speed of electromagnetic waves in a vacuum is the same as the speed of light (which is, in itself an electromagnetic wave). It can be measured by finding the frequency and wavelength of two different waves, and then by that correlation, the speed of the waveform.


How do you know the speed of a electromagnetic wave in a vacuum?

The speed of electromagnetic waves in a vacuum is the same as the speed of light (which is, in itself an electromagnetic wave). It can be measured by finding the frequency and wavelength of two different waves, and then by that correlation, the speed of the waveform.


Is a vacuum still a vacuum if there are electromagnetic waves in the vacuum?

Yes, a vacuum is still a vacuum if electromagnetic waves are present. A vacuum is an area with no matter in it. We know that matter is anything which has mass and takes up space. Electromagnetic waves have no mass, and certianly take up no space. They're energy.


How does the speed of light depend on the wavelength?

The equation relating the velocity, wavelength and frequency of an electromagnetic wave is given byv=f λwhere v - velocity of the em wavef - frequency of the em wave andλ - wavelength of the em wave------------------------------------------------------------------------------------------------It is so important to know that velocity of light depends on the nature of the medium and does not depend on the wavelength.


How do you find velocity when only the frequency is given?

The question is incomplete. Frequency of what? If it refers to electromagnetic waves, you won't need even frequency to determine velocity (in a vacuum), because it will always be c (the speed of light). You can compute the speed of other kinds of waves if you know the frequency and wavelength, but not from frequency alone. The formula is frequency x wavelength = velocity If the waves are electromagnetic, and you have only frequency, you can compute the wavelength using the same formula.


If this wave travels at 16 cms it's wavelenght would be?

To calculate the wavelength, you can use the formula: wavelength = speed of wave / frequency. However, to calculate the wavelength, we need to know the frequency of the wave in addition to the speed. If you provide the frequency of the wave, we can calculate the wavelength.


What is the formula to calculate the diameter of a string to get the desired Hz if you know the wavelength?

There is no such formula.


How do we know that electromagnetic waves can travel through to vacuum?

Electromagnetic waves are a form of energy that does not require a medium to travel through, so they can propagate through a vacuum. This is due to the nature of electromagnetic fields, which can self-propagate and do not rely on particles to transmit the wave. This property has been extensively demonstrated through various scientific experiments and observations, affirming that electromagnetic waves can travel through a vacuum.