Happy Independence Day

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This is Shoaib Alam, Man behind your ElectronGate

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I Wonder, By Jeannie Kirby [ poem ]

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Alpha, Beta, &Gamma Particles

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https://youtu.be/oLhDYRDdNl0 Alpha rays :- Nature: He nuclei represented as    2 He⁴  or He²+ Mass :    4 a.m.u or  6.642 × 10^ –27 kg Charge : Positive charge of +2 units Penetrating power : Minimum -0.1 mm thick aluminum foil can stop it. Ionising power :   Maximum. Beta rays:- Nature: Stream of electron represented as -1e⁰. Mass :    0.000548597 a.m.u. or 9.1 x 10 - 31 kg Charge : Negative charge of –1 unit. Penetrating power : It is stopped by 5 mm thick Aluminum foil. Ionising power : Less than Alpha but more than Gamma rays. Gamma rays:— Nature : Electromagnetic waves of very short wavelengths. Mass : No mass Charge : 0 Penetrating power : Maximum — even 750 mm thick pb plate cannot stop it. Ionising power : very Low.
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Discovery of Radioactivity / what is Radioactivity?

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 The French physicist Henry Becquerel was engaged in furnishing a relation between X-rays and luminescence  exhibited by Uranium salts. Hindi video lecture dekhne k lie  👇👇👇   One day in 1896 by chance he wrapped a photographic plate in a thick black paper and placed a small crystal of potassium uranyl sulphate upon the black paper.Next day to his surprise he saw that the photographic plate had darkened at some places.  Becquerel concluded that the uranium salt had emitted a kind of ray which could penetrate the thick black paper, like X-rays.  Discovery of Radioactivity  After  thorough Investigation on the nature and the characteristics of the rays he came to the following conclusions  :--- 1. Uranium salts spontaneously emitted a kind of that could not be controlled by any physical or chemical condition.  2.  The ray could fog photographic plate wrapped in black paper and could pass through thin sheets of metal foil which are opaque to ordinary light. 3.  the ray could ionise the
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