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Gamma radiation is not easily absorbed by the human body(not as easily as alpha and beta anyway). So it can penetrate to the internal organs and harm them.
beta
Ernest Rutherford discovered radiation. Alpha is most harmful is ingested, it cannot penetrate the sign, nor paper or metal or lead, beta is able to penetrate paper and metal, and gamma, the most harmful of the three is able to penetrate paper, metal, lead, and skin. beta can penetrate the skin after a long period of time.
It doesn't absorb clever. It penetrates, and it can penetrate paper, smoke, a layer of skin and thin aluminium.
Of alpha, beta and gamma radiation, gamma radiation has the greater ability to penetrate either shielding or living tissue. The penetration issue aside, a contact source that is an alpha emitter can do more tissue damage than beta or gamma radiation. Alpha and beta radiation are particulate radiation. They involve a particle. Gamma radiation is electromagnetic radiation of high energy. Use the links below to learn more about each type of radiation and get a handle on what's up.
Gamma radiation. Alpha radiation is the least penetrating, beta radiation penetrates and lasts longer than alpha but also "dies out" relatively quickly, but Gamma radiation will not only penetrate deep, but it will also stay long.
Gamma radiation, X Rays
Gamma radiation is not easily absorbed by the human body(not as easily as alpha and beta anyway). So it can penetrate to the internal organs and harm them.
beta
The ability of particulate radiation to penetrate human tissue varies by particle type, and to some degree on the energy of the particle. The three basic types of particulate radiation are the alpha particle, the beta particle and the neutron. Let's look at them. The alpha particle won't penetrate very far at all. As the alpha particle is a helium-4 nucleus, it is massive, and it will be stopped by the outer most layers of the skin. As for beta particles, which are electrons or positrons, they can't go much farther. They'll be stopped before much penetration into the skin. That leaves just one other particle: the neutron. Neutrons have an extreme ability to penetrate tissue. They can do some serious damage, and we don't want to be on the receiving end of them. There are some other particle types, but they aren't generally seen outside the physics lab. These are the "big three" types of particulate radiation, you'll find links below to help you discover more.
since gamma radiation can penetrate more they are used in kidney scanners
Ernest Rutherford discovered radiation. Alpha is most harmful is ingested, it cannot penetrate the sign, nor paper or metal or lead, beta is able to penetrate paper and metal, and gamma, the most harmful of the three is able to penetrate paper, metal, lead, and skin. beta can penetrate the skin after a long period of time.
Alpha radiation cannot get pass through our body as it cannot penetrate through things. Beta can penetrate through things better than alpha. So if alpha is inside our body then it cannot get outside our body and therefore it becomes dangerous.
Because alpha and beta aren't strong enough to penetrate the skin or something
It doesn't absorb clever. It penetrates, and it can penetrate paper, smoke, a layer of skin and thin aluminium.
Of alpha, beta and gamma radiation, gamma radiation has the greater ability to penetrate either shielding or living tissue. The penetration issue aside, a contact source that is an alpha emitter can do more tissue damage than beta or gamma radiation. Alpha and beta radiation are particulate radiation. They involve a particle. Gamma radiation is electromagnetic radiation of high energy. Use the links below to learn more about each type of radiation and get a handle on what's up.
If by ionising radiation you mean alpha radiation (the most ionising out of alpha, beta and gamma radiation) then about a millimetre of paper would stop it. alpha radiation ionises the molecules of anything it reaches, but can pass through very few things due to its immense ionising power. This includes human tissue, but in all honesty, a large dose of alpha radiation wouldn't do human tissue alot of good. In short, almost any material can stop ionising radiation.