What does the energy of an electromagnetic wave depends on?Sstackexchange
Updated: 26th November 2019
The energy of an electromagnetic wave. The intensity of an electromagnetic wave is only related to its amplitude and not its frequency. A photon has the same wavelength as the wave that's carrying it, and its energy is .
In respect to this, what is the energy of electromagnetic waves?
In physics, electromagnetic radiation (EM radiation or EMR) refers to the waves (or their quanta, photons) of the electromagnetic field, propagating (radiating) through space-time, carrying electromagnetic radiant energy.
What kind of energy is transferred by electromagnetic waves?
Electromagnetic waves are waves that consist of vibrating electric and magnetic fields. They transfer energy through matter or across space. The transfer of energy by electromagnetic waves is called electromagnetic radiation.
They can also feel the waves. Sound cannot travel through a vacuum. A vacuum is an area without any air, like space. So sound cannot travel through space because there is no matter for the vibrations to work in.
Electromagnetic waves are created by the vibration of an electric charge. This vibration creates a wave which has both an electric and a magnetic component. An electromagnetic wave transports its energy through a vacuum at a speed of 3.00 x 108 m/s (a speed value commonly represented by the symbol c).
All waves of electromagnetic radiation travel at the speed of 3 x 108 m/s (in a vacuum). When traveling in other media, such as air or water, the speed of electromagnetic waves is only slightly slower. f) Find the wavelength of a wave of electromagnetic radiation that has a frequency of 6 x 1014 Hz.
The amount of energy carried by a wave is related to the amplitude of the wave. A high energy wave is characterized by a high amplitude; a low energy wave is characterized by a low amplitude. Putting a lot of energy into a transverse pulse will not effect the wavelength, the frequency or the speed of the pulse.
While period is measured in seconds per cycle, frequency is measured in cycles per second. Consider our wave with a period of 2 seconds. Since the wave completes one cycle every two seconds, then its frequency is one half or 0.5 Hz. So, you see - period and frequency are reciprocals of each other.
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. The speed of a wave is only altered by alterations in the properties of the medium through which it travels.
Heat, like sound, is a form of kinetic energy. Molecules at higher temperatures have more energy, thus they can vibrate faster. Since the molecules vibrate faster, sound waves can travel more quickly. The speed of sound in room temperature air is 346 meters per second.
A longitudinal wave is a wave in which the particles of the medium are displaced in a direction parallel to the direction of energy transport. A compression is a point on a medium through which a longitudinal wave is traveling that has the maximum density.
A charged particle moving without acceleration produces an electric as well as a magnetic field. It produces an electric field because it's a charge particle. But when it is at rest, it doesn't produce a magnetic field.
It is simply natural for objects to move from high energy to low energy; but work is required to move an object from low energy to high energy. In a similar manner, to move a charge in an electric field against its natural direction of motion would require work.
Inside a generator is a magnet, some electrical wire, and a source of mechanical energy. The mechanical energy moves the wire into the magnetic field of the magnet so that the wire cuts through the magnetic lines of force. As a result, electric current is produced. Electric generators can come in all sizes.
Magnets can make electricity. A magnetic field pulls and pushes electrons in some objects near them to make them move. Metals, like copper, have electrons that are moved easily and can be readily moved from their orbits. If a magnet is moved quickly through a coil of copper wire, electrons move and electricity is made.
But if you put a north pole and a south pole together, the magnets will stick together because the north and south poles attract each other. Just like protons and electrons—opposites attract in magnets. The properties of magnets are used to make electricity. Moving magnetic fields pull and push electrons.
It depends on the material of the magnet. If it is an alnico magnet, which is all metals, it will conduct electricity. A paper clip can conduct electricity, whether it is being magnetized or not. The atomic structure in the paper clip allows electrons to move between atoms, which is the hallmark of a conductor.
In the similar way, a changing magnetic field produces an electric current in a wire or conductor. The relationship between electricity and magnetism is called electromagnetism.
Electricity and magnetism are closely related. Flowing electrons produce a magnetic field, and spinning magnets cause an electric current to flow. Electromagnetism is the interaction of these two important forces.
Relation between Electric and magnetic fields. I've read that both the electric and magnetic field vectors are perpendicular to each other in an electromagnetic wave. Passing steady current through a straight conductor shows some magnetic flux (because most of the energy is wasted into outer space as magnetic lines).
This is different from an electric field in that a charge experiences a force in an electric field even when it is stationary. Also, the direction of the force in a magnetic field is perpendicular to both the direction of the velocity and the magnetic field lines.
Electric current produces a magnetic field. This magnetic field can be visualized as a pattern of circular field lines surrounding a wire. One way to explore the direction of a magnetic field is with a compass, as shown by a long straight current-carrying wire in.