# Observing Oscillating Charges: Effects on Energy

• alireza4898
In summary, the conversation discusses the scenario of an oscillating charge broadcasting a wave and an observer who is also oscillating at a fixed distance. The question arises about the energy received by the observer. The conclusion is that the observer will still see an oscillating electric field, but this needs to be considered carefully in accelerated reference frames. The speaker also cautions not to take their words too literally.
alireza4898
Hi all

let suppose a charge is in oscillating (e.g antenna),it broadcast wave,and also suppose an observer oscillate , so the observer had saw the charge in fixed distance so we have not magnetic field.

what we could say about the energy that the observer recived?

The oscillating charge will still radiate.

Thanks
But I could not understand your sentence,
finally the observer will see the wave or not?

That observer will still see an oscillating E field. But we need to be careful E and B fields in accelerated reference frames. And don't take anything i say to literally

I also don't understand;Whay should "That observer will still see an oscillating E field ?" when the charge and Observer are in a constant distance?

## 1. What is an oscillating charge?

An oscillating charge is an electric charge that moves back and forth rapidly between two points. This movement creates a continuous change in the electric field around the charge, resulting in the emission of electromagnetic waves.

## 2. How does an oscillating charge affect energy?

An oscillating charge can transfer energy in the form of electromagnetic waves. As the charge moves back and forth, it creates a changing electric field, which in turn creates a changing magnetic field. These changing fields can then induce an electric current in nearby conductors, resulting in the transfer of energy.

## 3. What are some common examples of oscillating charges?

Some common examples of oscillating charges include AC (alternating current) electricity, radio waves, and light waves. All of these involve the rapid movement of charged particles, resulting in the emission of electromagnetic waves.

## 4. How is the energy of an oscillating charge calculated?

The energy of an oscillating charge is calculated using the formula E = hf, where E is the energy in joules, h is Planck's constant (6.626 x 10^-34 joule seconds), and f is the frequency of the oscillation in hertz (Hz). This formula relates the energy of the electromagnetic waves to their frequency.

## 5. Are there any practical applications of observing oscillating charges?

Yes, there are many practical applications of observing oscillating charges. Some examples include wireless communication technologies, such as radio, television, and Wi-Fi, as well as medical imaging techniques like MRI (magnetic resonance imaging). Understanding the effects of oscillating charges on energy is crucial in developing and improving these technologies.

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