Engee documentation

Units of measurement of the Engee Physical Modeling language

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The article describes the system of units of measurement supported in Engee physical modeling language. Units of measurement are divided into two main categories: compatible and incompatible with the prefixes of the International System of Units of Measurement (SI). There is also a list of C prefixes and acceptable mathematical operations on units of measurement of the Engee physical modeling language.

Units of measurement compatible with SI prefixes

Some units of measurement can be combined with SI prefixes (for example, kilo-, milli-, micro-). This allows you to express values that differ by many orders of magnitude.

Units of measurement compatible with SI prefixes

Name (Russian/English)

Designation

Ampere / Ampere

A

Atmosphere / Atmosphere

atm

Bar / Bar

bar

The Pendant / Coulomb

C

Calorie / Calorie

cal

Dina / Dyne

dyn

Electronvolt / Electronvolt

eV

Farad / Farad

F

Gauss / Gauss

G

Gram / Gram

g

Henry / Henry

H

Hertz / Hertz

Hz

Joule / Joule

J

Kelvin (absolute)

K

Litre / Liter

l

Meter / Meter

m

Newton / Newton

N

Ohms / Ohms

Ohm

Poise / Poise

P

Pascal / Pascal

Pa

Radian / Radian

rad

Siemens / Siemens

S

Second / Second

s

Stokes / Stokes

St

Tesla / Tesla

T

Volt / Volt

V

Watt / Watt

W

Weber / Weber

Wb

Units of measurement incompatible with SI prefixes

Some units of measurement are not used with SI prefixes — their values are fixed.

Units of measurement incompatible with SI prefixes

Name (Russian/English)

Designation

Acre / Acre

ac

Angular minute / Arc minute

arcmin

Arc second / Arc second

arcsec

British thermal unit/ British thermal unit

Btu_IT

Day / Day

d

Degree / Degree

deg

Degree Celsius (absolute) / Degree Celsius (absolute)

degC

Degree Fahrenheit (absolute)

degF

Degree Rankine (absolute)

degR

Degree Celsius (relative) / Degree Celsius (relative)

deltadegC

Degree Fahrenheit (relative) / Degree Fahrenheit (relative)

deltadegF

Degree Rankine (relative) / Degree Rankine (relative)

deltadegR

Kelvin (relative) / Kelvin (relative)

deltaK

Foot / Foot

ft

American gallon / US gallon

gal

Standard gravity acceleration / Standard gravity acceleration

gn

Gon / Gon

gon

Hectare / Hectare

ha

Horsepower / Horsepower

HP_DIN

Hour / Hour

hr

English Gallon / Imperial Gallon

igal

Inch / Inch

in

Inch of mercury column / Inch of mercury

inHg

Kilogram-force / Kilogram-force

kgf

The Knot

kn

Pound-force

lbf

Pound-mass

lbm

Mile / Mile

mi

Minute / Minute

min

Millimeter of mercury / Millimeter of mercury

mmHg

Newt / Newt

newt

Nautical mile

nmi

Ounce / Ounce

oz

Pound per square inch

psi

Turnover / Revolution

rev

Rain / Reyn

reyn

Revolution per minute / Revolution per minute

rpm

Revolution per second / Revolution per second

rps

Slug / Slug

slug

Ton / Tonne

t

Yard / Yard

yd

SI system prefixes

SI prefixes are used to form multiple and fractional units of measurement.

SI system prefixes

Name (Russian/English)

Designation

Ratio

Yotta / Yotta

Y

Zetta / Zetta

Z

Exa / Exa

E

Peta / Peta

P

Tera / Tera

T

Giga / Giga

G

Mega / Mega

M

Kilo / Kilo

k

Hecto / Hecto

h

Soundboard / Deca

da

Deci / Deci

d

Santi / Centi

c

Milli / Milli

m

Micro / Micro

u

Nano / Nano

n

Pico / Pico

p

Femto / Femto

f

Atto / Atto

a

Zepto / Zepto

z

Yocto / Yocto

y

Acceptable operations on units of measurement

The following mathematical operations are supported to create derived units of measurement:

Operation

Usage example

Multiply

N*m (Newton meter)

To share

m/s (meter per second)

Degree

m^2 (square meter)

Staples

kg/(m*s^2) (kilograms per meter per second squared)