Electromagnetic Radiation

MRI does not emit ionizing radiation like X-rays or CT scans. Instead, it uses a magnetic field and radio waves to create detailed images of the body's internal structures without exposing the patient to harmful radiation.

The highest energy photons are all found at the "top" of the electromagnetic spectrum. That's the end populated by photons with the shortest wavelengths (and, therefore, the shortest periods) and the highest frequencies. These photons, these extremely energetic electromagnetic waves, are generated within the nuclei of atoms and released during nuclear events. Subatomic particles actually generate the photons as they go through changes. Stars (most of them) can produce photons in these energies continuously, or in bursts. We frequently refer to photons of extreme energies as gamma rays. We can stimulate nuclei to generate these high energy photons in the nuclear physics laboratory, and it's usually done with some sort of nuclear accelerator. We take protons - or whole atomic nuclei - and speed them up to near light speed and slam these nuclear bullets into targets (or other particles). Photons of the highest energies are produced. As one can imagine, shielding for containment is a big concern, as these energetic photons will punch through steel, concrete and earth. Some links are provided.

X-rays have shorter wavelengths and higher energy than visible light. X-rays are used for medical imaging as they can penetrate tissues, while visible light is used for photography due to its ability to capture color and detail. X-rays are ionizing radiation, meaning they can damage biological tissues, so they are used with caution.

Well the metal would obviously attract a charged particle for its charge less surface. The only possible way would be placing a positively charged object on the other side of the negative charged object such that it could counter effect the coulombian pull on the negative charge due to the metal.

To keep the positive charge in place it would need to place it within oppositely charged electronic plates. This needs more amendments but thats another topic.

When a charged object touches metal, the end result is usually what is known as a static shock.

Yes, a prism can split light into its different types of radiation, such as visible light, ultraviolet light, and infrared light. This separation occurs because different wavelengths of light refract at different angles as they pass through the prism, creating a spectrum of colors.

The wavelength closest to violet on the electromagnetic spectrum is around 400-450 nanometers. This corresponds to the range of wavelengths that our eyes perceive as violet light.

No, gamma rays have the shortest wavelength.

Yes, but in the case of solid objects that possess heat it is more proper to refer to them as black body radiators.

The color with the shortest wavelength is violet. It has the highest frequency and energy among the visible colors.

... is an inherently meaningless term; no matter how long a wavelength you name, I can choose one that's longer ("infinity" is not a real wavelength, and for any non-infinite number, there's always a larger one).

More applications of infrared light are: fiber optic communication, noncontact remote temperature measurement, homing missiles (e.g. AIM-9 Sidewinder air to air missile, AIM-132 Advanced Short Range Air-to-Air Missile), IrDA computer peripheral interface, TV remote controls, weather satellites, astronomy, art preservation and analysis, etc.

The maximum amount of energy that our sun gives out is in the yellow range of the spectrum, therefore it has been to the advantage of algae (and all other photosynthetic organisms) to specialize in this particular frequency. Ultra-violet has more energy of course but as the atmosphere filters out much of this it isn't energy efficient to specialize in this colour. There is lots of infra-red radiation around but it is of a low energy quantum and therefore doesn't give a high 'energy return' on being absorbed.

Now there are some organisms that do utilized both infra-red and ultra violet. Extremeophilles that live in volcanic geysers use heat (IR) exclusively. Human beings use UV to manufacture their Vitamin D. Algae however is a yellow range specialist.

Radiation can cause changes in the cells of a human. Some of these cells include your DNA which is passed on to your offspring. Mental and growth retardation can occur when exposed to high doses of radiation during fetal development.

No, microwaves are not a form of visible light. They fall within the electromagnetic spectrum at lower frequencies than visible light. Microwaves are used in appliances like microwave ovens for cooking food.

Visible wavelengths make up a small portion of the electromagnetic spectrum, approximately 0.0035%. They range from about 400 to 700 nanometers in wavelength, corresponding to the colors we can see with our eyes.

Shorter or longer than what ?

The wavelength of visible light is shorter than that of radio and heat, and longer

than the wavelength of X-ray and gamma radiation.

And the wavelength of green light is shorter than red light but longer than blue light.

Gamma radiation is the smallest and most penetrating form of nuclear radiation. It consists of high-energy electromagnetic waves, similar to X-rays.

Ultraviolet (UV) rays absorption can lead to skin damage, such as sunburn, premature aging, and an increased risk of skin cancer. UV exposure can also harm the eyes and suppress the immune system. It is important to protect the skin and eyes from UV rays by using sunscreen, wearing protective clothing, and avoiding excessive sun exposure.

Yes, electromagnetic radiation includes infrared radiation, which has longer wavelengths than visible light. Infrared radiation is not visible to the human eye but can be felt as heat. It is part of the electromagnetic spectrum, which encompasses all forms of electromagnetic radiation.

When a light wave is emitted from a flashlight or a candle, the medium that is disturbed is the electromagnetic field. Light is an electromagnetic wave that consists of oscillating electric and magnetic fields propagating through space.

Sunlight helps the human body to manufacture vitamin D. In that sense one can say that solar radiation contributes to vitamin D. It does not have vitamin D, though.

Things don't contain radiation. They can EMIT radiation, but they do this by actively producing it. It's like people emit sounds when they talk but there isn't a load of sound sitting inside the person waiting to be released.

Physical size of a gamma particle is smaller than that of alpha and beta particle. Since the particle size is smaller, the chances for a gamma particle to collide or interact with other particles (protons, neutrons, and electrons) are much lower. Please do not forget that atom is made up of mostly space. And also, gamma particles are neutral. So they do not have the potential to interact with charged particles.