return dimension of a unit - Maple Help

Online Help

All Products    Maple    MapleSim


Home : Support : Online Help : Science and Engineering : Units : Conversions : convert/dimensions

convert/dimensions - return dimension of a unit

Calling Sequence

convert(u, dimensions, opts)

Parameters

u

-

symbol; unit of measure to convert

opts

-

(optional) equation(s) of the form option=value where option is one of base, energy, or symbolic; properties of the conversion

Description

• 

The convert(u, dimensions) function returns the dimension for a unit u.

• 

The base dimensions include length, mass, time, electric_current, thermodynamic_temperature, amount_of_substance, luminous_intensity, amount_of_information, and currency. For a complete list use the GetDimensions(base=true) function. Complex dimensions known to the Units package are:

electric_resistivity

length^3*mass/(time^3*electric_current^2)

volume

length^3

volume_flow

length^3/time

moment_of_inertia

length^2*mass

action

length^2*mass/time

energy

length^2*mass/time^2

torque

length*length(radius)*mass/time^2

heat_capacity

length^2*mass/(time^2*thermodynamic_temperature)

magnetic_flux

length^2*mass/(time^2*electric_current)

magnetic_inductance

length^2*mass/(time^2*electric_current^2)

power

length^2*mass/time^3

electric_potential

length^2*mass/(time^3*electric_current)

electric_resistance

length^2*mass/(time^3*electric_current^2)

kinematic_viscosity

length^2/time

dose_equivalent

energy(dose_equivalent_index)/mass

absorbed_dose

energy(radiation)/mass

specific_heat_capacity

length^2/(time^2*thermodynamic_temperature)

area

length^2

magnetic_dipole_moment

length^2*electric_current

magnetic_polarizability

length^2*time^2*electric_current^2/mass

momentum

length*mass/time

force

length*mass/time^2

magnetic_permeability

length*mass/(time^2*electric_current^2)

thermal_conductivity

length*mass/(time^3*thermodynamic_temperature)

electric_field_strength

length*mass/(time^3*electric_current)

electric_dipole_moment

length*time*electric_current

speed

length/time

acceleration

length/time^2

jerk

length/time^3

surface_energy_density

mass/time^2

magnetic_flux_density

mass/(time^2*electric_current)

surface_power_density

mass/time^3

heat_transfer_coefficient

mass/(time^3*thermodynamic_temperature)

electric_charge

time*electric_current

molar_electric_charge

time*electric_current/amount_of_substance

luminous_flux

solid_angle*luminous_intensity

plane_angle

length/length(radius)

solid_angle

length^2/length(radius)^2

frequency

1/time

angular_speed

plane_angle/time

angular_acceleration

plane_angle/time^2

angular_jerk

plane_angle/time^3

electric_polarizability

time^4*electric_current^2/mass

heat_insulation_coefficient

time^3*thermodynamic_temperature/mass

exposure

electric_charge(radiation)/mass

linear_mass_density

mass/length

dynamic_viscosity

mass/(length*time)

pressure

mass/(length*time^2)

magnetizing_force

electric_current/length

linear_frequency

1/(length*time)

electric_displacement

time*electric_current/length^2

luminous_luminance

luminous_intensity/length^2

illuminance

solid_angle*luminous_intensity/length^2

electric_capacitance

time^4*electric_current^2/(length^2*mass)

electric_conductance

time^3*electric_current^2/(length^2*mass)

mass_density

mass/length^3

electric_permittivity

electric_current^2*time^4/(length^3*mass)

• 

You can modify the properties of the conversion by using the convert(u, dimensions, opts) form of this command. The opts argument can contain one or more of the following equations.

  

base = true or false

  

This option specifies whether to display the dimension as a product of powers of base dimensions. For example, a joule can be converted into either the complex dimension energy or the product of base dimensions length^2*mass/time^2. By default, this option is set to false.

  

symbolic = true or false

  

This option specifies whether annotations to units should be ignored.  By default, this option is set to false.

  

energy = true or false

  

If this option is set to true, all dimensions are converted to their similar form in terms of length.  This is useful for studying various energy units. See Energy Conversions. By default, this option is set to false.

Examples

convertms,dimensions

speed

(1)

convertfts,dimensions,base=true

lengthtime

(2)

convertcd,dimensions,base=true

luminous_intensity

(3)

convertNm,dimensions

energy

(4)

convertNmradius,dimensions

torque

(5)

convertNmradius,dimensions,symbolic=true

energy

(6)

convertW,dimensions,energy=true

1length2

(7)

convertJT,dimensions,energy=true

length

(8)

Converting a dimension to the default unit for that dimension in the currently selected system can be done as follows:

convertspeed,system,dimension

ms

(9)

You can also specify a different system. This will return the default unit for the given dimension in that system.

convertspeed,system,FPS,dimension

fts

(10)

See Also

convert, convert,conversion_table, convert,system, Energy Conversions, Units, Units/Index, Units[AddDimension], Units[GetDimension], Units[GetDimensions], Units[HasDimension], Units[RemoveDimension]


Download Help Document

Was this information helpful?



Please add your Comment (Optional)
E-mail Address (Optional)
What is ? This question helps us to combat spam