Question

what is radiation??​

Answer 1

RADIATION

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so in simple words,radiation is energy that comes from a source and travel through space and may be able to penetrate in various things like:-light,radio,telivision,phone,microwave are also types of radiation that is called as nonionizing.

Answer 2

RADIATION:-

Answer:Simply, Radiation is the release of energy in the form of moving waves or streams of particles. This energy can be low-level, like microwaves and cell phones; or high level , like X-rays or cosmic rays from outer space .These are known as Non -ionizing and ionizing radiation.

and ionizing radiation.But if we really want to understand radiation, we need to go inside the tiny world of the atom.

and ionizing radiation.But if we really want to understand radiation, we need to go inside the tiny world of the atom.Atoms are the microscopic building blocks of all matter in the universe.

and ionizing radiation.But if we really want to understand radiation, we need to go inside the tiny world of the atom.Atoms are the microscopic building blocks of all matter in the universe.Everything around us is made up of atoms,from the largest galaxies to our own bodies. The centre of the atom is called the Nucleus. That's where the word nuclear comes from-- there is a tremendous amount of energy inside!

The Nucleus of an atom is made up of two particles: protons, which carry a positive charge and neutrons, which have no charge. Outside the nucleus are electrons , which carry a negative charge. The attraction of these negative electrons to the positive nucleus is what keeps the atom together. Now , every element in the periodic table has a specific number of protons and neutrons. But sometimes an atom will have too many or too few neutrons. When this happens, it becomes unstable, or radioactive. An unstable atom is called a radioisotope.

For example, two neutrons in a hydrogen atom creates the radioisotope tritium. That's the stuff that helps make exit lights glow in the dark! Radioactive atoms want to become stable again. so they release energy untill they get back to a balanced state. This process is known as radioactive decay and there are three main types: Alpha,beta and gamma.

Alpha particles are heavy and travel small distance ;

beta particles are lighter and travel further and gamma radiation is actually a wave and it travels the farthest of all. The time it takes for half of the radioactive atoms of a radioisotope to decay is called a half life. Half-Life can range from a fraction of a second to billions of years.

life. Half-Life can range from a fraction of a second to billions of years. Let me give you an example of how half&lives come into play in nuclear medicine, Doctor inject patients with the radioisotope technetium-99 m

life. Half-Life can range from a fraction of a second to billions of years. Let me give you an example of how half&lives come into play in nuclear medicine, Doctor inject patients with the radioisotope technetium-99 m which emits gamma radiation. A gamma camera can then take pictures of the patients insides to help with the diagnosis.

life. Half-Life can range from a fraction of a second to billions of years. Let me give you an example of how half&lives come into play in nuclear medicine, Doctor inject patients with the radioisotope technetium-99 m which emits gamma radiation. A gamma camera can then take pictures of the patients insides to help with the diagnosis.The relatively short half - life of 6 hours for this radioisotope makes it ideal for these types of tests.

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