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When alpha particles are beamed at thin metal foil, they mostly pass through the foil with some deflected at small angles due to interactions with the metal atoms. This experiment led to the discovery of the nucleus by Ernest Rutherford in 1911.
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Define the three types of Radiation alpha particles beta particles gamma particles and list the name of the scientist who discovered it?
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.
What radiation can be stopped by a piece of metal foil?
Alpha particles can be stopped by a piece of metal foil due to their relatively low penetration power. This is because alpha particles have a large mass and charge, making them more likely to collide with the atoms in the metal foil and be absorbed.
What Rutherford might have observed if he had bombarded copper metal instead of gold with alpha particles?
Rutherford would likely have observed most alpha particles passing straight through the copper metal due to the low atomic weight and higher density of copper compared to gold. Occasionally, he may have observed some deflections at large angles, indicating interactions with the positively charged nucleus. Overall, the majority of alpha particles would have traversed the copper without much scattering.
What are the three types of radiation that occur in the vacuum tube?
The three types of radiation that occur in a vacuum tube are X-rays, alpha particles, and beta particles. X-rays are produced when high-speed electrons strike a metal target, while alpha and beta particles are emitted during the decay of radioactive materials within the tube.
Which barrier can alpha pass through?
Alpha radiation is stopped easily by thin substances such as a sheet of paper or the skin. It is because of this that alpha radiation is generally non-harmful to humans.
Can alpha particles pass through thick metal piece?
Alpha particles have low penetration power due to their large size and high positive charge. They can be stopped by a piece of paper or skin, and will definitely not pass through a thick metal piece.
When Rutherford performed his metal foil experiment did the alpha particles pass straight through the foil or bounce back?
In Rutherford's metal foil experiment, some alpha particles passed straight through the foil, while others were deflected at various angles. A small fraction of the alpha particles even bounced back towards the source. This led Rutherford to conclude that atoms have a small, dense nucleus at their center.
Define the three types of Radiation alpha particles beta particles gamma particles and list the name of the scientist who discovered it?
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.
What radiation can be stopped by a piece of metal foil?
Alpha particles can be stopped by a piece of metal foil due to their relatively low penetration power. This is because alpha particles have a large mass and charge, making them more likely to collide with the atoms in the metal foil and be absorbed.
What type of energy does a radioactive piece of metal have?
A radioactive piece of metal has nuclear energy. This energy is released as the unstable atomic nuclei decay and emit radiation in the form of alpha particles, beta particles, or gamma rays.
Why does Geiger counter not truly measure alpha radiation?
Alpha particles are Helium nuclei, two protons and two neutrons - mass 4 and charge 2. These particles have very little penetrating capability - they can be stopped with a few inches of air, a sheet of paper, your skin, etc. As a result, alpha particles have no chance of penetrating the metal shell of the Geiger counter and participating in the ionization pulses that it counts.
What Rutherford might have observed if he had bombarded copper metal instead of gold with alpha particles?
Rutherford would likely have observed most alpha particles passing straight through the copper metal due to the low atomic weight and higher density of copper compared to gold. Occasionally, he may have observed some deflections at large angles, indicating interactions with the positively charged nucleus. Overall, the majority of alpha particles would have traversed the copper without much scattering.
What are the three types of radiation that occur in the vacuum tube?
The three types of radiation that occur in a vacuum tube are X-rays, alpha particles, and beta particles. X-rays are produced when high-speed electrons strike a metal target, while alpha and beta particles are emitted during the decay of radioactive materials within the tube.
Why was existence of a tiny massive and positively charged nucleus was deduced from the observations?
Why or how? The number of alpha particles deflected was small ... indicating the nucleus was small. The deflection of an even smaller amount of alpha particles almost straight back toward the emitting source proved that the nucleus was heavier than the alpha particle. According to previous atomic theory, the alpha particles should have all gone straight through the metal foil, with none deflected. Math calculations based on the deflection pattern showed that the nucleus was repelling the alpha particles, that they were not actually hitting and bouncing off the nucleus... this showed that the nucleus was positively charged.
Why are alpha particles so useful in smoke detectors?
Alpha particles are useful in smoke detectors because they are easily absorbed by smoke particles. When this happens, the flow of electrical current between the electrodes, said flow being comprised of alpha particles, is reduced and causes the alarm to activate.
Which barrier can alpha pass through?
Alpha radiation is stopped easily by thin substances such as a sheet of paper or the skin. It is because of this that alpha radiation is generally non-harmful to humans.
What absorbs alpha radiation?
Pretty much anything will. A couple of sheets of paper would do it. Alpha radiation is big and bulky compared to other types of radiation. So it can't penetrate objects very far.
