Because in the body alpha particles interact directly with the organism cells.
It is the opposite. Radioactive elements which emit alpha particles are more dangerous inside the body than outside. Alpha particle radiation could be stopped by skin. So, is not dangerous outside the body. However, any contamination by those radioactive elements if got inside through mouth, or any other means, then the alpha particle radiation could be harmful to the very delicate inside body tissues.
Alpha, from outside the body, because alpha is stopped by the skin, a sheet of paper, or a few inches of air. From inside the body, however, alpha is one of the most dangerous forms of radiation.
alpha radiation
alpha radiation is more dangerous than beta or gamma if ingested or inhaled because its power to ionize (or to disrupt atoms) is 20x than that of beta and gamma. but if the source is outside the body or at a distance gamma radiation is much dangerous because it could penetrate thick walls.
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.
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 in the body alpha particles interact directly with the organism cells.
It is the opposite. Radioactive elements which emit alpha particles are more dangerous inside the body than outside. Alpha particle radiation could be stopped by skin. So, is not dangerous outside the body. However, any contamination by those radioactive elements if got inside through mouth, or any other means, then the alpha particle radiation could be harmful to the very delicate inside body tissues.
Alpha, from outside the body, because alpha is stopped by the skin, a sheet of paper, or a few inches of air. From inside the body, however, alpha is one of the most dangerous forms of radiation.
Any electromagnetic radiation can be dangerous. Alpha waves are higher on the radiation scale than x-rays so yes, they are dangerous.
alpha radiation
alpha radiation is more dangerous than beta or gamma if ingested or inhaled because its power to ionize (or to disrupt atoms) is 20x than that of beta and gamma. but if the source is outside the body or at a distance gamma radiation is much dangerous because it could penetrate thick walls.
Generally no radiation is safe. You cannot "inject" radiation into anything because it is the product of various unstable nuclei decaying. Alpha radiation is much more ionising than gamma, but much less penetrating than it. That makes it more dangerous if it is inside your body; it can be stopped by skin. Therefore you would have to swallow a sample of a radioactive material. However, gamma radiation is always emitted together with alpha or beta radiation.
Alpha radiation is not necessarily the "weakest" radiation. Alpha radiation is the emmanation of helium nuclei, which is two protons and two neutrons. As such, an alpha particle has a mass of 4 and a charge of +2. As a result, it interacts more readily than any of the other forms of radiation. This means that alpha can be stopped with a few inches or air, or even with a sheet of paper. That does not mean, however, that alpha is the least dangerous - if it is ingested, such as into the lungs, it will be in close proximity to sensitive tissues, making it one of the most dangerous forms of radiation. Its penetrating power is certainly the least, but, "weakest", not by a long shot.
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.
Yes, alpha radiation is an ionizing radiation.
From an external source the gamma is more penetrating so would be more dangerous. If ingested the alpha becomes more dangerous, as there is no shielding inside your body, and the alpha particles have more biological effect. Of course the size of the source also matters, but alpha particles are easily stopped when outside your body