Transmission, absorption and dispersion: Electromagnetism and matter

By Robert M. Hazen, PhD, George Mason University

In the early days of electromagnetism, the only form known to scientists was visible light. And the visible light has a very narrow wavelength, from fifteen to thirty million inches. Where were all the different waves? These are predicted by scientific theory, but no one has seen them before. How can this spectrum be heard?

Visible beam of light.
Only visible part of the electromagnetic spectrum was discovered by early scientists. (Image: Micro Shutterstock)

Understanding waves

Imagine yourself in a series of boats on the ocean. The ocean surface can show many, many different wavelengths. You may have very few tiny waves. Basically, waves can be thousands of miles long. And you can have all kinds of waves between them.

Now the row boat only responds to waves that are too close to the spectator’s length. If you have waves that are 10 or 20 or 30 feet long in waves, the row boat will fly and turn, and you will feel those amazing things. And that’s what you can understand. But unless you take a closer look at the ocean, you will never see tiny waves. You will not hear those. You will not feel the storm.

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Beyond visible light

And this is very similar to the situation with humans and the electromagnetic spectrum. People only have their eyes as a probe, and the eyes can only see the visible area. So we never doubted that there were many other wavelengths.

And it was the discovery and use of these various waves that changed technology – especially between 1880 and 1930 – that changed society in many ways in many ways.

The only way we can learn about electromagnetic radiation is by interacting with matter. There are only three basic ways in which electromagnetic radiation interacts with matter – transmitting, absorbing, and dispersing. And all three are always encountered in your daily life.

Learn more about the nature of power.

Transfer process

Transmission is when an electromagnetic wave passes through an object. If something is clear, it is because the light passes through it. Therefore, window glass is visible to the naked eye. Now, the transmitted light can have two important and related effects. First, the waves are often washed away.

This is called a refraction. Glass is the basis of all kinds of glasses and optical devices, and you can actually see this phenomenon with a magnifying glass, and then change the look of the object behind that lens. We also use the most important equipment, telescopes and microscopes.

The light decreases

Clear triangular glass premium artificial light is converting and diffuse into the tissue.
Reflective light is one of the products of light. (Image: SuperPuay / Shutterstock)

In addition, when light is transmitted through a material, at least with the exception of a vacuum, it slows down. This is a wonderful event. The magnitude of that reduction is directly related to the size of the contrast, the amount of bending you see with the lens.

Diamond is one of the highest reference pointers. In fact, light drops to 80,000 miles per second – less than half the speed of space. So, like a light hitting a diamond, he wears the brakes and travels at 80,000 miles per second.

Absorption – interaction with light

The second way light is connected to matter is called absorption. Electromagnetic waves are a type of energy. That energy can be transferred from one object to another, and can be absorbed by materials, and absorption is one of the processes that take place. When this happens, the light is usually converted into heat energy.

If you walk on a blackboard during the summer, you will experience this phenomenon. A blackout consumes solar energy, is very, very hot, and if you put your feet on it, you can actually burn yourself. That is why people often walk barefoot in the middle of summer in barefoot, barefoot.

So any black material is basically attracting light. It is very hot in the winter, but it is very hot in the summer to wear black.

Learn more about the laws of thermodynamics.

Dispersal seeker

And then we come to the third type of interaction: It’s called scattering. That’s when electromagnetic waves jump from the wound to the ground, and this can happen in a variety of ways. They spread the word. Scattered scattering occurs only when light rises from the white surface and the rays of light enter and rise at the same speed in all directions. The surface is white only.

You also have a meditation event. And by meditation, you have a very consistent kind of dispersal. In this case, the light is shining normally – from a mirror reflection. And then you have a third type of distribution called dispersal.

Distribution is a very special type of scattering of light waves. When you look at that rainbow, you may have seen the same conversion effects that you download from CD. In the process, light is being distributed to the colors of the rooms. Iridescence is a distributed process.

Energy Conservation

Energy conservation must be equal to the amount of electromagnetic energy transmitted, absorbed, and dispersed by radiation. So energy protection is always here. And often you see these three effects occur at the same time.

For example, if you light up in colored water, you have some distribution, you have some scattering, and you have some absorption. All three processes occur simultaneously.

For humans, it is the visible tissue that connects our eyes. The light reflected and scattered by the world around us connects with our eyes, and this is how we see things around us.

Common questions about transmission, absorption, and dispersal

Q: What are the three ways in which electromagnetic waves interact with matter?

The three ways Electromagnetic waves Interaction with matter is transfer, absorption, and dispersal.

Q: What is the transmission of electromagnetic waves?

Transmission An electromagnetic wave passes through an object. If something is clear, it is because the light passes through it.

Q: What is absorption?

Electromagnetic waves are a type of energy. That energy can be transferred from one object to another, and it can be absorbed by objects. This is called Absorption.

Q: What is scattering?

Scattering Electromagnetic waves jump from matter to object and scatter from the earth, and this can happen in a variety of ways.

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