Measuring and Calibration - Revision history

Uncivator: Deduplicated contents and added some derived units

2026-02-21T09:36:17Z

Deduplicated contents and added some derived units

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Sargeras: Distance, mass, quantity

2025-05-20T18:58:18Z

Distance, mass, quantity

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Eixcosxsinxi: defined, described, and gave an example of the mole.

2025-05-19T16:09:16Z

defined, described, and gave an example of the mole.

← Older revision		Revision as of 16:09, 19 May 2025
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	== Quantity: the mole ==		== Quantity: the mole ==
	the amount of atoms in ~~1cm squared~~ of ~~carbon~~		The number of atoms in 1 gram of Carbon-12. A mole is a counting unit. The units of moles are abbreviated as mol. Just like you can have 1 dozen eggs which is 12 eggs, you can have 3 moles of atoms. The definition based off of Carbon is to make the mole a standard number of atoms. This number is roughly 6.022E23. This is a lot of atoms but as per the definition, 1 gram of carbon-12 has exactly 1 mole of Carbon atoms. This leads to the statement that Carbon-12 weighs exactly 12 grams for every mol. This unit gives chemists a nice way to convert between ratios of atoms and amount of the substance. For instance, H<sub>2</sub>O is the chemical formula for water. This means in order to make one molecule of water, you need two atoms of Hydrogen for every one atom of Oxygen. Barring the fact that Oxygen does not naturally occur in one singular atom, you could say that since one atom of Hydrogen weighs 1.00794 grams per mol, and Oxygen weighs 15.999 grams per mol, you could say for every 1.00794 grams of Hydrogen you need 15.999 grams of Oxygen to create water with little to no excess.

	== ~~Light~~: the candela ==		== : the candela ==

	== Useful sub-units ==		== Useful sub-units ==

Hestia dev: /* Time: the second */ added the "Human" way to track time From the "Time" page. i didnt know there was already a page for measurement

2025-05-18T12:53:07Z

Time: the second: added the "Human" way to track time From the "Time" page. i didnt know there was already a page for measurement

← Older revision		Revision as of 12:53, 18 May 2025
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	More recently the second has been redefined as a number of vibrations of the cesium element, but in everyday life this definition does not have practical use.		More recently the second has been redefined as a number of vibrations of the cesium element, but in everyday life this definition does not have practical use.

			Theres also a "human" way to track time, But it can differ on all sorts of elements. Take this as a "basic" way to tell time.
			{\| class="wikitable"
			\|+Human way to track
			!Unit
			!How to measure
			!Equivalent to
			\|-
			\|Breath.
			\|Inhale and exhale.
			\|~5 seconds.
			\|-
			\|Heartbeat.
			\|Place your second and third finger from your thumb, on your wrist or neck, every beat is a pulse.
			\|~1 second.
			\|-
			\|Sunrise to sunset.
			\|From the moment you can see the sun, to the moment it can't be seen anymore.
			\|~11-16 hours, depending on season and place.
			\|-
			\|One sunrise to another sunrise.
			\|From one sunrise to another.
			\|~1 day, depending on where you are.
			\|-
			\|30 sunrise to sunrise cycles.
			\|The time it takes to see 30 sunrises.
			\|~1 month.
			\|-
			\|4 months.
			\|about every 4 months, ~120 sunrise cycles.
			\|~1 season.
			\|-
			\|4 seasons
			\|about every 4 seasons, 12 months, ~360 sunrise cycles
			\|~1 year
			\|}

	== Electric current: the ampere ==		== Electric current: the ampere ==

Eixcosxsinxi: /* Scientific Notation */

2025-05-18T12:42:25Z

Scientific Notation

← Older revision		Revision as of 12:42, 18 May 2025
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	Numbers can get large really fast. To shorten this so that we don't have 30 zeros floating at the end of every number, we use some basic math to describe a notation. If the number has a E(some number here), e(number), or even x10^(number), this stands in the place of x10<sup>(number)</sup>.		Numbers can get large really fast. To shorten this so that we don't have 30 zeros floating at the end of every number, we use some basic math to describe a notation. If the number has a E(some number here), e(number), or even x10^(number), this stands in the place of x10<sup>(number)</sup>.

	This means that you can shorten the number 467,110,000,000 to 4.67110000000x10^11 or, roughly 4.67E11. A negative number means the same that any negative exponent means.		This means that you can shorten the number 467,110,000,000 to 4.67110000000x10^11 or, roughly 4.67E11. A negative number means the same that any negative exponent means. (''See basic rules of [[Math]]'')

	This means you can turn the number 0.000000846 to 8.46E-7.		This means you can turn the number 0.000000846 to 8.46E-7.

Eixcosxsinxi: added table of prefixes

2025-05-16T16:17:12Z

added table of prefixes

← Older revision		Revision as of 16:17, 16 May 2025
Line 1:		Line 1:
	The '''International System of Units (SI)''' is the modern metric system used globally for precise measurement. It defines seven base units (meter, kilogram, second, ampere, kelvin, mole, and candela) from which all other units are derived. These units are '''universal, coherent, and based on fundamental physical constants'''. By adopting SI units, a post-collapse society can '''restore scientific progress, fair trade, and efficient resource management''', laying the groundwork for sustainable development.		The '''International System of Units (SI)''' is the modern metric system used globally for precise measurement. It defines seven base units (meter, kilogram, second, ampere, kelvin, mole, and candela) from which all other units are derived. These units are '''universal, coherent, and based on fundamental physical constants'''. By adopting SI units, a post-collapse society can '''restore scientific progress, fair trade, and efficient resource management''', laying the groundwork for sustainable development.

	= Useful Things to Note =		= Useful Things to Note =
	== Scientific Notation ==		== Scientific Notation ==
	Numbers can get large really fast. To shorten this so that we don't have 30 zeros floating at the end of every number, we use some basic math to describe a notation. If the number has a E(some number here), e(number), or even x10^(number), this stands in the place of x10<sup>(number)</sup>.		Numbers can get large really fast. To shorten this so that we don't have 30 zeros floating at the end of every number, we use some basic math to describe a notation. If the number has a E(some number here), e(number), or even x10^(number), this stands in the place of x10<sup>(number)</sup>.

	This means that you can shorten the number 467,110,000,000 to 4.67110000000x10^11 or, roughly 4.67E11. A negative number means the same that any negative exponent means.		This means that you can shorten the number 467,110,000,000 to 4.67110000000x10^11 or, roughly 4.67E11. A negative number means the same that any negative exponent means.

	This means you can turn the number 0.000000846 to 8.46E-7.		This means you can turn the number 0.000000846 to 8.46E-7.
Line 11:		Line 10:
	== Prefixes ==		== Prefixes ==
	Because the previous notation can be hard to read, prefixes are available to whatever unit you want. For instance, instead of 2.53x10^-5 meters, you could say 25.3 µm which means 25.3 1 thousandths of a meter. This is much easier to picture even though it is still really small.		Because the previous notation can be hard to read, prefixes are available to whatever unit you want. For instance, instead of 2.53x10^-5 meters, you could say 25.3 µm which means 25.3 1 thousandths of a meter. This is much easier to picture even though it is still really small.

	A common set of these prefixes go as follows:		A common set of these prefixes go as follows:
	{\| class="wikitable"		{\| class="wikitable"
Line 17:		Line 17:
	!symbol		!symbol
	!meaning		!meaning
			!
			!name
			!symbol
			!meaning
			\|-
			\|queta
			\|Q
			\|x10<sup>30</sup>
			\|
			\|quecto
			\|q
			\|x10<sup>-30</sup>
			\|-
			\|ronna
			\|R
			\|x10<sup>27</sup>
			\|
			\|ronto
			\|r
			\|x10<sup>-27</sup>
			\|-
			\|yotta
			\|Y
			\|x10<sup>24</sup>
			\|
			\|yocto
			\|y
			\|x10<sup>-24</sup>
	\|-		\|-
	\|zeta		\|zeta
	\|Z		\|Z
	\|x10<sup>21</sup>		\|x10<sup>21</sup>
			\|
			\|zepto
			\|z
			\|x10<sup>-21</sup>
	\|-		\|-
	\|exa		\|exa
	\|E		\|E
	\|x10<sup>18</sup>		\|x10<sup>18</sup>
			\|
			\|atto
			\|a
			\|x10<sup>-18</sup>
	\|-		\|-
	\|peta		\|peta
	\|P		\|P
	\|x10<sup>15</sup>		\|x10<sup>15</sup>
			\|
			\|femto
			\|f
			\|x10<sup>-15</sup>
	\|-		\|-
	\|tera		\|tera
	\|T		\|T
	\|x10<sup>12</sup>		\|x10<sup>12</sup>
			\|
			\|pico
			\|p
			\|x10<sup>-12</sup>
	\|-		\|-
	\|giga		\|giga
	\|G		\|G
	\|x10<sup>9</sup>		\|x10<sup>9</sup>
			\|
			\|nano
			\|n
			\|x10<sup>-9</sup>
	\|-		\|-
	\|mega		\|mega
	\|M		\|M
	\|x10<sup>6</sup>		\|x10<sup>6</sup>
			\|
			\|micro
			\|μ
			\|x10<sup>-6</sup>
	\|-		\|-
	\|kilo		\|kilo
	\|k		\|k
	\|x10<sup>3</sup>		\|x10<sup>3</sup>
			\|
			\|mili
			\|m
			\|x10<sup>-3</sup>
	\|-		\|-
	\|hecto		\|hecto
	\|h		\|h
	\|x10<sup>2</sup>		\|x10<sup>2</sup>
			\|
			\|centi
			\|c
			\|x10<sup>-2</sup>
	\|-		\|-
	\|deka		\|deka
	\|da		\|da
	\|x10<sup>1</sup>		\|x10<sup>1</sup>
			\|
			\|deci
			\|d
			\|x10<sup>-1</sup>
	\|}		\|}

92.234.16.50: /* Quantity: the mole */

2025-05-16T08:02:27Z

Quantity: the mole

← Older revision		Revision as of 08:02, 16 May 2025
Line 78:		Line 78:

	== Quantity: the mole ==		== Quantity: the mole ==
			the amount of atoms in 1cm squared of carbon

	== Light: the candela ==		== Light: the candela ==

Eixcosxsinxi: added prefixes greater than 10^0

2025-05-14T20:26:51Z

added prefixes greater than 10^0

← Older revision		Revision as of 20:26, 14 May 2025
Line 12:		Line 12:
	Because the previous notation can be hard to read, prefixes are available to whatever unit you want. For instance, instead of 2.53x10^-5 meters, you could say 25.3 µm which means 25.3 1 thousandths of a meter. This is much easier to picture even though it is still really small.		Because the previous notation can be hard to read, prefixes are available to whatever unit you want. For instance, instead of 2.53x10^-5 meters, you could say 25.3 µm which means 25.3 1 thousandths of a meter. This is much easier to picture even though it is still really small.
	A common set of these prefixes go as follows:		A common set of these prefixes go as follows:
			{\| class="wikitable"
			\|+
			!name
			!symbol
			!meaning
			\|-
			\|zeta
			\|Z
			\|x10<sup>21</sup>
			\|-
			\|exa
			\|E
			\|x10<sup>18</sup>
			\|-
			\|peta
			\|P
			\|x10<sup>15</sup>
			\|-
			\|tera
			\|T
			\|x10<sup>12</sup>
			\|-
			\|giga
			\|G
			\|x10<sup>9</sup>
			\|-
			\|mega
			\|M
			\|x10<sup>6</sup>
			\|-
			\|kilo
			\|k
			\|x10<sup>3</sup>
			\|-
			\|hecto
			\|h
			\|x10<sup>2</sup>
			\|-
			\|deka
			\|da
			\|x10<sup>1</sup>
			\|}

Eixcosxsinxi: added section on prefixes

2025-05-14T20:20:36Z

added section on prefixes

← Older revision		Revision as of 20:20, 14 May 2025
Line 8:		Line 8:

	This means you can turn the number 0.000000846 to 8.46E-7.		This means you can turn the number 0.000000846 to 8.46E-7.

			== Prefixes ==
			Because the previous notation can be hard to read, prefixes are available to whatever unit you want. For instance, instead of 2.53x10^-5 meters, you could say 25.3 µm which means 25.3 1 thousandths of a meter. This is much easier to picture even though it is still really small.
			A common set of these prefixes go as follows:


	= The Units =		= The Units =

Eixcosxsinxi: added note about scientific notation

2025-05-14T20:09:31Z

added note about scientific notation

← Older revision		Revision as of 20:09, 14 May 2025
Line 2:		Line 2:

	= Useful Things to Note =		= Useful Things to Note =
	== ~~Prefixes~~ ==		== Scientific Notation ==
	Numbers can get large really fast. To shorten this so that we don't have 30 zeros floating at the end of every number, we use some basic math to describe a notation. If the number has a E(some number here), e(number), or even x10^(number), this stands in the place of x10^(number). This		Numbers can get large really fast. To shorten this so that we don't have 30 zeros floating at the end of every number, we use some basic math to describe a notation. If the number has a E(some number here), e(number), or even x10^(number), this stands in the place of x10<sup>(number)</sup>.

			This means that you can shorten the number 467,110,000,000 to 4.67110000000x10^11 or, roughly 4.67E11. A negative number means the same that any negative exponent means.

			This means you can turn the number 0.000000846 to 8.46E-7.

	= The Units =		= The Units =