Units of Action - Maple Help

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Units of Action

 

Description

Examples

Description

• 

Action has the dimension length squared mass per time. The SI composite unit of action is the kilogram meter squared per second.

• 

Maple knows the units of action listed in the following table.

Name

Symbols

Context

Alternate Spellings

Prefixes

 

 

 

 

 

planck

 

standard *

plancks

 

 

h_bar @

Atomic

 

 

  

An asterisk ( * ) indicates the default context, an at sign (@) indicates an abbreviation, and under the prefixes column, SI indicates that the unit takes all SI prefixes, IEC indicates that the unit takes IEC prefixes, and SI+ and SI- indicate that the unit takes only positive and negative SI prefixes, respectively.  Refer to a unit in the Units package by indexing the name or symbol with the context, for example, planck[standard]; by using an abbreviation, for example, h_bar; or, if the context is indicated as the default, by using only the unit name or symbol, for example, planck.

  

 

  

The units of action are defined as follows.

  

A standard planck is defined as a joule second.

  

An atomic planck is defined as h2π standard planck where h is the Planck constant.

Examples

convert'planck','dimensions','base'=true

length2masstime

(1)

convert1,'units','m'2'g''s','planck'

11000

(2)

convert1,'units','m'2'g''s','planckAtomic'

9.4825235521030

(3)

See Also

convert/dimensions

convert/units

Units

Units/Index

Units/length

Units/mass

Units/time

 


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