Understand Alpha, Beta and Gamma radiations. Click on the link toWatch the VIDEO explanation: Watch Video
Certain elements exhibits spontaneous emission of radiations. Such substances are called radioactive substances. Here one can observe of the three major type of rays emanating from a radioactive substance placed inside a lead block. These three rays get deflected in different directions in electrostatic field. The rays that gets deflected towards negatively charged plate are called Alpha rays while deflect towards positively charged plate are called beta rays. The rays that goes straight without deflection are called gamma rays. The alpha rays are slightly heavier and move with a relatively less velocity. They have less penetrating power and can be stop by a simple sheet of paper. Beta rays are lighter then alpha rays and move with relatively higher velocity. They have higher penetrating power and can pass paper but can be block by aluminium foil. The gamma rays move with a very high velocity and have higher penetrating power. They can pass a thick aluminium foil but not a block of lead. Alpha rays are made of positively charged particles with a net charge of +2. They have high ionising power. The beta rays are of negatively charged power with a charge equal to that of an electron. They have less ionising power. The gamma rays are not made up of any particles. They have least ionising power. They are electromagnetic radiations.
Certain elements exhibits spontaneous emission of radiations. Such substances are called radioactive substances. Here one can observe of the three major type of rays emanating from a radioactive substance placed inside a lead block. These three rays get deflected in different directions in electrostatic field. The rays that gets deflected towards negatively charged plate are called Alpha rays while deflect towards positively charged plate are called beta rays. The rays that goes straight without deflection are called gamma rays. The alpha rays are slightly heavier and move with a relatively less velocity. They have less penetrating power and can be stop by a simple sheet of paper. Beta rays are lighter then alpha rays and move with relatively higher velocity. They have higher penetrating power and can pass paper but can be block by aluminium foil. The gamma rays move with a very high velocity and have higher penetrating power. They can pass a thick aluminium foil but not a block of lead. Alpha rays are made of positively charged particles with a net charge of +2. They have high ionising power. The beta rays are of negatively charged power with a charge equal to that of an electron. They have less ionising power. The gamma rays are not made up of any particles. They have least ionising power. They are electromagnetic radiations.
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