Half-life - Revision history

Designing Buildings at 07:54, 17 May 2022

2022-05-17T07:54:55Z

← Older revision		Revision as of 07:54, 17 May 2022
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−	Half-life is a measure~~, it indicates~~ the time ~~needed~~ for a quantity ~~or item~~ to reduce to a half of its initial ~~size or~~ value. The term is found in the medical and nuclear sciences and is expressed by the formula t by 1/2 or t1/2.	+	Half-life is a measure of the time taken for a quantity to reduce to a half its initial value. The term is found in the medical and nuclear sciences and is expressed by the formula t by 1/2 or t1/2.

−	In particular it is used to describe the speed at which unstable atoms become less stable through decay, releasing radioactivity in the process ~~or vice versa~~, ~~as such~~, how long atoms remain stable.	+	In particular it is used to describe the speed at which unstable atoms become less stable through decay, releasing radioactivity in the process, or conversely, how long atoms remain stable.

−	In medical science the same measure is used to describe the biological life span of drugs and other chemicals in the human body. It is also more generally used to describe any type of exponential or non-exponential decay ~~and the~~ converse of half-life (when considering exponential growth) is doubling time.	+	In medical science the same measure is used to describe the biological life span of drugs and other chemicals in the human body.
		+
		+	It is also more generally used to describe any type of exponential or non-exponential decay.
		+
		+	The converse of half-life (when considering exponential growth) is doubling time.

	= Related articles on Designing Buildings =		= Related articles on Designing Buildings =
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	* Chernobyl New Safe Confinement.		* Chernobyl New Safe Confinement.
	* Generation nuclear.		* Generation nuclear.
−	* High Speed 2 (HS2).
−	* Infrastructure and Projects Authority.
−	* Mitigating the Delay Risk in Power Plant Projects.
	* Methane and other gasses from the ground.		* Methane and other gasses from the ground.
−	* ~~National Infrastructure Plan.~~	+	* Nuclear power.
−	* Nationally Significant Infrastructure Projects.	+
	* Planning and managing Hinkley Point C.		* Planning and managing Hinkley Point C.
−	* Renewable energy.
−	* Wind energy.
	* Radon protection for new domestic extensions and conservatories with solid concrete ground floors (GG 73 revised).		* Radon protection for new domestic extensions and conservatories with solid concrete ground floors (GG 73 revised).
	* Radon: Guidance on protective measures for new buildings BR 211		* Radon: Guidance on protective measures for new buildings BR 211

Editor at 09:45, 16 May 2022

2022-05-16T09:45:05Z

← Older revision		Revision as of 09:45, 16 May 2022
Line 1:		Line 1:
−	Half-life is a measure ~~when~~ indicates is the time needed for a quantity or item to reduce to a half of its initial size or value. The term is found in the medical and nuclear sciences~~. In particular it describes~~ the ~~speed at which unstable atoms decay~~ or ~~become less stable releasing radioactivity in the process as such how long atoms remain stable~~.	+	Half-life is a measure, it indicates the time needed for a quantity or item to reduce to a half of its initial size or value. The term is found in the medical and nuclear sciences and is expressed by the formula t by 1/2 or t1/2.

−	~~The term~~ is ~~commonly~~ used ~~in nuclear physics~~ to describe ~~how quickly~~ unstable atoms ~~undergo radioactive~~ decay or how long ~~stable~~ atoms ~~survive~~. ~~The term~~ is ~~also~~ used ~~more generally to characterize any type of exponential or non-exponential decay. For example, the medical sciences refer~~ to the biological ~~half-~~life of drugs and other chemicals in the human body. ~~The~~ converse of half-life (in exponential growth) is doubling time.	+	In particular it is used to describe the speed at which unstable atoms become less stable through decay, releasing radioactivity in the process or vice versa, as such, how long atoms remain stable.
		+
		+	In medical science the same measure is used to describe the biological life span of drugs and other chemicals in the human body. It is also more generally used to describe any type of exponential or non-exponential decay and the converse of half-life (when considering exponential growth) is doubling time.
		+
		+	= Related articles on Designing Buildings =
		+
		+	* Chernobyl New Safe Confinement.
		+	* Generation nuclear.
		+	* High Speed 2 (HS2).
		+	* Infrastructure and Projects Authority.
		+	* Mitigating the Delay Risk in Power Plant Projects.
		+	* Methane and other gasses from the ground.
		+	* National Infrastructure Plan.
		+	* Nationally Significant Infrastructure Projects.
		+	* Planning and managing Hinkley Point C.
		+	* Renewable energy.
		+	* Wind energy.
		+	* Radon protection for new domestic extensions and conservatories with solid concrete ground floors (GG 73 revised).
		+	* Radon: Guidance on protective measures for new buildings BR 211
		+	* Radon protection for new dwellings GG 74.
		+	* Radon protection for new large buildings GG 75.
		+	* Radon.
		+	* Radon: Guidance on protective measures for new buildings BR 211.
		+	* Types of radioactive material (Radionuclides)
		+
		+	[[Category:DCN_Definition]] [[Category:Definitions]] [[Category:Standards_/_measurements]]

Editor: Created page with "Half-life is a measure when indicates is the time needed for a quantity or item to reduce to a half of its initial size or value. The term is found in the medical and nuclear sci..."

2022-05-16T09:00:38Z

Created page with "Half-life is a measure when indicates is the time needed for a quantity or item to reduce to a half of its initial size or value. The term is found in the medical and nuclear sci..."

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Half-life is a measure when indicates is the time needed for a quantity or item to reduce to a half of its initial size or value. The term is found in the medical and nuclear sciences. In particular it describes the speed at which unstable atoms decay or become less stable releasing radioactivity in the process as such how long atoms remain stable.

The term is commonly used in nuclear physics to describe how quickly unstable atoms undergo radioactive decay or how long stable atoms survive. The term is also used more generally to characterize any type of exponential or non-exponential decay. For example, the medical sciences refer to the biological half-life of drugs and other chemicals in the human body. The converse of half-life (in exponential growth) is doubling time.