Gcse physics radioactive dating

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Added: 28.03.2021
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In paper mills, the thickness of the paper can be controlled by measuring how much beta radiation passes through the paper to a Geiger counter. The counter controls the pressure of the rollers to give the correct thickness. With paper, or plastic, or aluminium foil, b rays are used, because a will not go through the paper. We choose a source with a long half-life so that it does not need to be replaced often. Even after it has been packaged, gamma rays can be used to kill bacteria, mould and insects in food.
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Radioactive dating definition science

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Dating physics - The Bot Platform

When an unstable nucleus gives out an alpha or beta particle, the nucleus turns into the nucleus of a new element. This process is called radioactive decay. Although radioactive decay is a random process, statistically, over a time called the half-life , half of the parent radioactive nuclei will have decayed. Working out the half-life allows us to calculate when a radioactive element will become stable. Look at the diagram. In this decay model, the green squares represent the parent unstable nuclei. They decay into the red squares — the daughter nuclei.
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LINKS to all the sub-indexes on this page. Acids, Alkalis, pH scale, bases, neutralisation, salt preparations and tests for ions and gases. Water and aspects of aqueous chemistry. Reversible reactions, chemical equilibrium, ammonia, nitric acid, fertilisers, pollution. Reactivity Series of Metals, Experiments and Corrosion.
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If there is anything about the website you are unhappy with, or you think there is an error, or you think something hasn't been covered adequately, please politely email me with your query to chem hotmail. What's assessed in this paper? Topic 1.
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