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Electromagnetic Radiation

Electromagnetic (EM) radiation is the energy transmitted through space or a material medium in the form of electromagnetic waves. The frequency range of such waves is tremendous, and is shown by the electromagnetic spectrum. These waves include radio waves, microwaves, infrared waves, visible light waves, ultraviolet (UV) waves, X-rays, and gamma rays.

2,156 Questions

Does Mercury have UV radiation?

Whichever way you mean this question, the answer is an emphatic "yes".

-- The vapor of the element mercury, when excited by an electric current,

is a potent source of ultraviolet radiation.

-- The sunward side of the planet Mercury, closest planet to the sun and

without an atmosphere, is bathed in ultraviolet radiation from the sun far

more intense than the level of UV radiation at the Earth's surface.

Is it possible to detect the wavelength of an electromagnetic wave and how?

That depends a lot on the order of magnitude of the electromagnetic radiation in question. If it's radio waves or microwaves, you can use a coil of wire hooked up to an oscilloscope (preferably a digital one), and use a function on the device to measure the wavelength.

If it's something between infrared and ultraviolet, including visible light, you'd have to use a special light sensor, though I'm not sure of the name. However, there is a relatively simple experiment that can give you a rough estimate of the wavelength of light you can see:

As for things like X-rays and Gamma rays, sorry, but I have no clue, though I can speculate that it would be possible to take a diffraction based approach such as the one outlined on the link above, but the equipment would surely be more complicated. Not to mention that such forms of radiation are very dangerous.

What is the frequency in hertz and the energy in joules of an x-ray photon with a wavelength of 2.32 Å?

For the frequency, first convert the wavelength to meters (divide the number of Angstroms by 1010), then use the formula: wavelength x frequency = speed. Using the speed of light in this case. Solving for frequency: frequency = speed / wavelength.

To get the photon's energy, multiply the frequency times Planck's constant, which is 6.63 x 10-34 (joules times seconds).

Are gamma rays and x rays the same?

The short answer is "No".

The long answer is as follows: "Light is a form of radiation, and defined as a number of photons. Each photon, when emitted, has a certain amount of energy. This is dictated by the amount of energy the particle has when it emits light. Higher levels of light require more energy to produce. Lower levels of energy produce light like microwaves or infra-red. Medium levels include visible light, ultraviolet and such. High levels, which require enormous amounts of energy, include things like X-rays and Gamma rays. Remember that there's no real difference between forms of light. Each category simply includes light with energy between one level and another (E.g Ultraviolet light exists between 10nm and 400nm). The number is arbitrary, however to a human there is still an important difference. So no, they aren't the same.

Which band of the electromagnetic spectrum has a frequency higher than x-rays?

Gamma rays have frequencies higher than x-rays in the electromagnetic spectrum. They have the shortest wavelengths and highest energies in the spectrum.

What is model balance in physics and functions?

In physics, model balance refers to the equation representing the conservation of energy or momentum in a physical system. It is used to ensure that the inputs and outputs of a system are in equilibrium, allowing for accurate predictions and analysis. In mathematical functions, balance refers to maintaining equality on both sides of the function, ensuring that the relationship between variables is consistent.

What is the name of the radiation between visible light and x rays?

The radiation between visible light and x-rays is called ultraviolet (UV) radiation. UV radiation has shorter wavelengths and higher energy levels than visible light, but lower energy levels than x-rays.

How do you regain your taste after radiation?

To help regain your sense of taste after radiation therapy, try eating smaller, more frequent meals and adding seasonings or marinades to enhance the flavor of your food. Avoid very hot or very cold foods, as extreme temperatures can dull your taste buds. Consulting with a dietitian may also provide helpful tips and guidance for managing changes in taste.

What is the layer of the sun thorugh which energy is transferred away from the core buy radiation?

The layer of the Sun through which energy is transferred away from the core by radiation is called the radiative zone. In this zone, energy from the core travels outward as photons, which are absorbed and re-emitted multiple times by the particles in the dense solar plasma before reaching the convective zone.

Which is not radioactive beta rays gamma rays or X-rays?

Both beta rays and gamma rays are the products of radioactive decay and are the result of changes in atomic nuclei. X-rays can be generated by using high voltage to accelerate electrons and slam them into a metal target, so they might be said to be non-radioactive.

Does a fluorescent bulb specificaly phosphorus reflects ultraviolet radiation.?

There is no phosphorus in a fluorescent lamp, the coating is a compound called phosphor.

  • phosphorus is an element that burns.
  • phosphor is a compound that when excited by an electron beam, UV light, or x-rays glows in visible light.

A fluorescent lamp is a mercury vapor UV (aka black light) lamp with a phosphor coating on the inside of the lamp tube to turn the invisible UV light to visible light.

Why does the color black get hot in the sun and the color white stays cool?

The black absorbs radiation and reflects little of it. This causes black objects to get warm quickly. White reflects much of the radiation that hits it, and it doesn't warm as rapidly. This is the cause for black objects getting hot quickly in the sun, and white objects to warm less rapidly.

Which radiation is the range of electromagnetic waves with frequencies higher than violet on the visible spectrum?

Ultraviolet radiation is the range of electromagnetic waves with frequencies higher than violet on the visible spectrum. It has shorter wavelengths and higher energy than visible light. Exposure to UV radiation can have harmful effects on living organisms.

Who have longer wavelengths visible light or radio waves?

The longest radio wave used for communication is around 3 millimeters long.

The shortest visible wavelength of light is around 0.0004 millimeters long.

Does the radiation emitted by earth's surface have longer or shorter wavelengths compared to solar radiation?

The radiation emitted by Earth's surface has longer wavelengths compared to solar radiation. Earth emits long-wave radiation in the infrared range, while solar radiation consists of shorter-wave radiation in the visible and ultraviolet ranges.

What does the sun have to do with the electromagnetic spectrum?

Hydrogen nuclei undergo fusion within the Sun and this reaction releases energy as 0.3% of the hydrogen's mass is converted into energy. This energy spans several bands of the electromagnetic spectrum, most of it is in the UV-Vis portion. For more information look up blackbody radiation.

Was feynman wrong in saying light is a particle?

Most likely not.

Light is made up of photons, and even photons have mass..Thus light is a particle as particles are mass.

But to confuse you, even though light = photons & photons = particle & particle = mass; the photons also act as a wave.

Which is rather incredible, because it means that a mass also acts as a wave.

Do all molecules absorb electromagnetic radiation at some frequency?

No, not all molecules absorb electromagnetic radiation at a distinct frequency. The ability of a molecule to absorb radiation depends on its structure and the energy levels of its electrons. Molecules with specific functional groups or electronic configurations exhibit absorption at characteristic frequencies.

Is it true ultraviolet light had longer wavelength than visible light?

No, ultraviolet light has a shorter wavelength than visible light. Visible light falls within the electromagnetic spectrum with wavelengths ranging from approximately 400 to 700 nanometers, while ultraviolet light has shorter wavelengths below 400 nanometers.

Where on the electromagnetic spectrum is visible light found?

Visible light is found in the electromagnetic spectrum between infrared and ultraviolet light, with wavelengths ranging from about 400 to 700 nanometers. It is the range of electromagnetic radiation that is visible to the human eye.

What are 3 forms of electromagnetic radiation with a wavelength higher than visible light?

  1. Ultraviolet radiation: has shorter wavelengths than visible light.
  2. X-rays: have even shorter wavelengths than ultraviolet radiation.
  3. Gamma rays: have the shortest wavelengths and highest energy among electromagnetic radiation.

Which has the lowest frequency in the electromagnetic spectrum microwaves radio waves visible light or gamma rays?

Radio waves have the lowest frequency in all of the electromagnetic spectrum. The next higher frequency energy is microwave, visible light including ultraviolet, infrared, X-ray, then gamma ray

What is the reason that light is electromagnetic wave?

No sure what you mean by "the reason." Electromagnetic waves exist in our Universe. Our eyes are able to detect a small fraction of the spectrum of these waves, and we call that small fraction of the spectrum, "light."

In other words, the reason that light is an EM wave is because it IS.

Why cannot a single wave represent a particle?

A single wave cannot represent a particle because waves and particles have different properties that cannot be fully described by the same model. While particles have a definite location and momentum, waves exhibit properties like interference and diffraction which are not compatible with the concept of a localized particle. This led to the development of wave-particle duality in quantum mechanics where particles exhibit both particle-like and wave-like behaviors.

How does electromagnetic energy use in the field of medicine?

X-Rays are a type of electromagnetic waves. and they play an important role in dentistry and orthopedic investigation. Many individuals undergo an X-ray to allow medical professionals to gain a better idea of what is going on inside someone so appropriate treatment can be prescribed and provided.

We also see gamma radiation, a higher energy form of electromagnetic radiation, used in treating some types of cancer. When we hear that someone has undergone "radiation therapy" in an attempt to stop or control cancer, the gamma ray source is often what is being referred to. Other types of radiation can be used, but gamma ray treatments are still common.