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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

What could exposure to ionizing radiation cause?

Exposure to ionizing radiation can potentially cause damage to cells, DNA mutations, an increased risk of cancer, and various health effects depending on the dosage and duration of exposure. It is important to limit exposure to ionizing radiation and follow safety guidelines to minimize risks.

How much of the electromagnetic spectrum can your eye detect as light?

The human eye can detect a small portion of the electromagnetic spectrum, known as visible light. This range spans from approximately 400 to 700 nanometers in wavelength, corresponding to colors we perceive as violet to red.

Which is the most penetrating rays x-rays or gamma rays?

Gamma rays are the most penetration rays because of its shortest wave length...

What is the formula for electromagnetic radiation?

The formula for the speed of electromagnetic radiation in a vacuum is given by c = λν, where c is the speed of light, λ is the wavelength, and ν is the frequency. Additionally, the energy of a photon of electromagnetic radiation is given by E = hν, where h is Planck's constant.

What is the wavelength in nm of a light in a vacuum that has a frequency of 40 x 10 14 Hz?

The wavelength of a light wave is given by the formula: wavelength = speed of light / frequency. In a vacuum, the speed of light is approximately 3 x 10^8 m/s, which is 300,000,000 m/s. Therefore, the wavelength of a light with a frequency of 40 x 10^14 Hz is 7.5 x 10^-7 m, or 750 nm.

Why are X-rays used in the preference of alpha beta and gamma radiation?

I presume you mean for medical imaging. X-rays are ideal because they penetrate (1) skin and muscle fairly easily but (2) bone with difficulty. As such, radiologists can examine bone structure inside a body.

Alpha particles and beta particle can not do (1).

Gamma rays do (1) extremely well, but also blast through bone as well. They blast through organic tissue so well that they are quite dangerous to any life on Earth.

What is the infrared radiation emitted from a candle?

The infrared radiation emitted from a candle is a type of electromagnetic radiation that is not visible to the human eye. It is produced as a result of the heat generated by the candle flame and can be felt as warmth by our skin.

What metals reflects electromagnetic radiation?

Metals such as aluminum, silver, and gold are known to be good reflectors of electromagnetic radiation, including visible light and infrared radiation. Their smooth and shiny surfaces allow for efficient reflection of a wide range of electromagnetic wavelengths.

Which are more energetic photons of UV A radiation or photons of UV B radiation?

Photons of UV B radiation are more energetic than photons of UV A radiation. UV B radiation has a shorter wavelength and higher energy compared to UV A radiation, making it more damaging to the skin and eyes.

What electromagnetic radiation is present as the largest percentage of the solar radiation?

When you try to stump me with a multiple-choice question, please

be good enough to include the list of permissible choices.

What heat transfer uses electromagnetic waves to increase thermal energy?

Microwave Radiation is Very Effectively absorbed by Water molecules, this results in the increased thermal agitation of the Water molecules that absorb the Mw radiation - as found in Microwave ovens.

What electromagnetic radiation cannot reach the Earth's surface?

Extreme ultraviolet and X-rays are mostly absorbed by the Earth's atmosphere before reaching the surface. This absorption helps protect living organisms from the harmful effects of these high-energy radiations.

What types of radiations are there?

There are only two types of radiation.

1. Electromagnetic

Under this we have gamma radiation, X radiation, light and heat

2. Particle radiation

Under this we have alpha and beta.

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.