Quick Question: Electromagnetic Waves

In summary, electromagnetic waves are a type of energy that can travel through empty space or through a medium, created by the movement of electrically charged particles. They differ from other types of waves in that they do not require a medium to travel through and have a wide range of frequencies. These waves have properties such as wavelength, frequency, amplitude, and speed, and can be reflected, refracted, and diffracted. They have many practical applications, including communication, cooking, medical treatments, and imaging. Electromagnetic waves are created by moving electrically charged particles and can be detected using various instruments.
  • #1
BrooklynBees
19
0
What happens to the amplitude of an electromagnetic wave when it crosss from a less dense to a more dense medium?

I couldn't find it anywhere on the net.
 
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  • #2
Less dense to more dense isn't specific enough for EM waves. If the material is close enough to electrically neutral (even in the presence of strong EM fields), then the waves wil continue unchanged.
If your talking about light, it gets even more complicated.
 
  • #3


The amplitude of an electromagnetic wave does not change when it crosses from a less dense to a more dense medium. The amplitude of an electromagnetic wave is determined by the source of the wave and is not affected by the medium it travels through. However, the speed of the wave may change as it enters a more dense medium, which can result in a change in the wavelength of the wave. This phenomenon is known as refraction and is governed by Snell's law.
 

What are electromagnetic waves?

Electromagnetic waves are a type of energy that can travel through empty space or through a medium, such as air or water. They are created by the movement of electrically charged particles and consist of both electric and magnetic fields. These waves can vary in frequency and wavelength, which determines their properties and uses.

How do electromagnetic waves differ from other types of waves?

Unlike mechanical waves, such as sound waves, electromagnetic waves do not require a medium to travel through. They can travel through a vacuum, like outer space, at the speed of light. Electromagnetic waves also have a wide range of frequencies, including radio waves, microwaves, infrared, visible light, ultraviolet, x-rays, and gamma rays.

What are the properties and characteristics of electromagnetic waves?

Electromagnetic waves have several key properties, including wavelength, frequency, amplitude, and speed. They also have the ability to be reflected, refracted, and diffracted, much like other types of waves. Electromagnetic waves interact with matter in various ways, depending on their frequency. For example, high-frequency waves like x-rays and gamma rays can penetrate through materials, while low-frequency waves like radio waves are easily absorbed and reflected.

What are some practical applications of electromagnetic waves?

Electromagnetic waves have many practical uses in our daily lives. Radio waves are used for communication, microwaves are used for cooking, and infrared waves are used for remote controls. Visible light is essential for sight, while ultraviolet waves are used in medical treatments and sterilization. X-rays and gamma rays are used in medical imaging and cancer treatment.

How are electromagnetic waves created and detected?

Electromagnetic waves are created by moving electrically charged particles, such as electrons. These waves can also be produced artificially, such as in a radio antenna or a light bulb. Electromagnetic waves are detected using various instruments, such as antennas, telescopes, and cameras. Different types of detectors are used depending on the frequency of the waves being detected.

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