PhysicalValues/en - Versionsgeschichte

Sv: Änderung übernommen aus altem Wiki von cg, 27.1.26

2026-02-23T11:32:32Z

Änderung übernommen aus altem Wiki von cg, 27.1.26

2025-07-23T07:04:29Z

Formula Examples

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	"/ alternative (individual values (up to 4 associations))		"/ alternative (individual values (up to 4 associations))
	vars := { a: 10 . b: 20 . c: 30 . x : 2 }.
	('ax^2 + bx + c' asPhysicExpression)		('ax^2 + bx + c' asPhysicExpression)
	valueWith:('a' -> 10)		valueWith:('a' -> 10)

2025-07-23T06:37:16Z

Example2: Time to Load a Cap (i.e. RC time constant)

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	:and also get the same 10 seconds as result.		:and also get the same 10 seconds as result.

	The capacitor's voltage will grow along a logarithmic curve, and is not fully charged after its RC time constant.		The capacitor's voltage will grow along a logarithmic curve, and is not fully charged after its RC time constant (its roughly 2/3 loaded).
	Typical approximations will go for a 90% load, taking 3-5 times the RC time constant. (see wikipedia)		Typical approximations will go for a 90% load, taking 3-5 times the RC time constant. (see wikipedia)

2025-06-17T16:18:51Z

Defining Additional Unit Converters

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	baseUnitValueBlock:baseUnitValueBlock		baseUnitValueBlock:baseUnitValueBlock

			Where
	Where ''baseUnit'' is the underlying base (SI) unit, ''unitString'' is the string used when printing, ''unitValueBlock'' is a Smalltalk block to compute the unit value from a base unit value and ''baseUnitValueBlock'' is a Smalltalk block to compute the base unit value from the unit value.
			* ''baseUnit'' is the underlying base (SI) unit,
			* ''unitString'' is the string used when printing,
			* ''unitValueBlock'' is a Smalltalk block to compute the unit value from a base unit value and
			* ''baseUnitValueBlock'' is a Smalltalk block to compute the base unit value from the unit value.

	==== Example: Cubic Inch Unit ====		==== Example: Cubic Inch Unit ====
	For example, to get volumes printed as cubic inches, you could define <sup>1)</sup>:		For example, to get volumes printed as cubic inches, you could define <sup>1)</sup>:

2025-06-17T16:17:39Z

EEU/Imperial (Pound) Mass

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	* ''aNumber'' '''american barrels''' '''asBarrelsUS''' (prints itself with unit 'bbl.')		* ''aNumber'' '''american barrels''' '''asBarrelsUS''' (prints itself with unit 'bbl.')

	=== EEU/Imperial ~~(Pound)~~ Mass ===		=== EEU/Imperial Mass ===

	'''Unit Access'''		'''Unit Access'''

2025-06-17T14:40:47Z

EEU/Imperial (Pound) Force

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	* ''aNumber'' '''troyOunces''' '''asTroyOunces''' (prints itself with unit 'oz t')		* ''aNumber'' '''troyOunces''' '''asTroyOunces''' (prints itself with unit 'oz t')

	=== EEU/Imperial ~~(Pound)~~ Force ===		=== EEU/Imperial Force ===

	'''Unit Access'''		'''Unit Access'''
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	* PhysicalUnit::Mass '''poundal'''		* PhysicalUnit::Mass '''poundal'''
	::Returns a unit which represents its values as "pdl"		::Returns a unit which represents its values as "pdl"

			=== EEU/Imperial Power ===

			'''Unit Access'''
			* PhysicalUnit::Mass '''poundForce'''
			::Returns a unit which represents its values as "lbf"

			* PhysicalUnit::Mass '''poundal'''
			::Returns a unit which represents its values as "pdl"

			=== EEU/Imperial Energy ===

			'''Unit Access'''
			* PhysicalUnit::Mass '''btu'''
			::Returns a unit which represents its values as "btu"

	=== EEU/Imperial Temperature ===		=== EEU/Imperial Temperature ===

2025-06-17T13:47:38Z

EEU/Imperial (Pound) Force

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	* PhysicalUnit::Mass '''poundForce'''		* PhysicalUnit::Mass '''poundForce'''
	::Returns a unit which represents its values as "lbf"		::Returns a unit which represents its values as "lbf"

			* PhysicalUnit::Mass '''poundal'''
			::Returns a unit which represents its values as "pdl"

	=== EEU/Imperial Temperature ===		=== EEU/Imperial Temperature ===

2025-06-17T13:17:10Z

EEU/Imperial (Pound) Mass

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	* PhysicalUnit::Mass '''poundMass'''		* PhysicalUnit::Mass '''poundMass'''
	::Returns a unit which represents its values as "lb"		::Returns a unit which represents its values as "lb"

			* PhysicalUnit::Mass '''ounces'''
			::Returns a unit which represents its values as "oz"

			* PhysicalUnit::Mass '''troyOunces'''
			::Returns a unit which represents its values as "oz t"

	'''Number Protocol'''		'''Number Protocol'''
	* ''aNumber'' '''pounds''' (prints itself with SI unit 'kg')		* ''aNumber'' '''pounds''' (prints itself with SI unit 'kg')
	* ''aNumber'' '''pounds''' '''asPounds''' (prints itself with unit 'lb')		* ''aNumber'' '''pounds''' '''asPounds''' (prints itself with unit 'lb')
			* ''aNumber'' '''troyOunces''' (prints itself with unit 'kg')
			* ''aNumber'' '''troyOunces''' '''asTroyOunces''' (prints itself with unit 'oz t')

	=== EEU/Imperial (Pound) Force ===		=== EEU/Imperial (Pound) Force ===

2025-06-17T13:13:05Z

EEU/Imperial Volume

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 * PhysicalUnit::Volume '''squareMiles'''
 ::Returns a unit which represents its values as "sq mi"
 '''Number Protocol'''
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 * ''aNumber'' '''cubic yards''' (prints itself with SI unit 'm³')
 * ''aNumber'' '''cubic yards''' '''asCubicFeet''' (prints itself with unit 'cu yd')
 === EEU/Imperial (Pound) Mass ===

2025-06-17T12:59:51Z

EEU/Imperial Volume

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	* ''aNumber'' '''cubic inches''' '''asCubicInches''' (prints itself with unit 'cu in')		* ''aNumber'' '''cubic inches''' '''asCubicInches''' (prints itself with unit 'cu in')
	* ''aNumber'' '''cubic feet''' (prints itself with SI unit 'm³')		* ''aNumber'' '''cubic feet''' (prints itself with SI unit 'm³')
	* ''aNumber'' '''cubic feet''' '''~~asSquareFeet~~''' (prints itself with unit 'cu ft')		* ''aNumber'' '''cubic feet''' '''asCubicFeet''' (prints itself with unit 'cu ft')
	* ''aNumber'' '''cubic yards''' (prints itself with SI unit 'm³')		* ''aNumber'' '''cubic yards''' (prints itself with SI unit 'm³')
	* ''aNumber'' '''cubic yards''' '''~~asSquareFeet~~''' (prints itself with unit 'cu yd')		* ''aNumber'' '''cubic yards''' '''asCubicFeet''' (prints itself with unit 'cu yd')

	=== EEU/Imperial (Pound) Mass ===		=== EEU/Imperial (Pound) Mass ===