List of symbols
| Symbol | Description |
| % | percentage |
| β° | tube oscillating angle |
| °C | degrees Celsius |
| Ω | ohm |
| μg | microgram |
| μg/m3 | micrograms per cubic metre |
| μm | micrometre |
| μs | microsecond |
| a | amplitude |
| α° | spray/tilt angle |
| A | ampere |
| A/m | amperes per metre |
| am | attometre |
| atm | standard atmosphere |
| C | coulomb |
| cd | candela |
| cd/m2 | candelas per square metre |
| dB | decibels |
| dB(A) | decibel amps |
| dBm | decibel metres |
| dm3 | cubic decimetre |
| dm3/mm | cubic decimetres/millimetre – flow |
| Em | exametre |
| eV | electronvolt |
| ƒ | frequency |
| F | farad |
| fm | femtometre |
| ft | foot |
| g | gram |
| G | gauss |
| G | shock |
| g2/Hz | accelerated spectral density |
| GHz | gigahertz – frequency |
| Gm | gigametre |
| g/m3 | grams per cubic metre |
| gn | peak acceleration |
| Gs | setting value of a characteristic quantity |
| h | hour |
| H | henry |
| ha | hectare |
| hp | horsepower |
| hr(s) | hour(s) – alternative to h |
| Hz | Hertz |
| I | amps |
| I2R | power |
| in | inch |
| J | joule |
| k | constant of the relay |
| K | kelvin |
| kA | kiloamps |
| kA/μs | kiloamps per microsecond |
| kg | kilogram |
| kg/m3 | kilograms per cubic metre |
| kgf | kilogram force |
| kHz | kilohertz |
| kPa | kilopascal – pressure |
| ks | kilosecond |
| kV | kilovolts |
| kW | kilowatt |
| kW/m2 | kilowatts per square metre – irradiance |
| l | litre |
| lb | pound |
| lb/in2 | pounds per square inch |
| m | metre |
| m/s | metres per second |
| m/s2 | metres per second per second – amplitude |
| m2 | square metres |
| m3 | cubic metres |
| mbar | millibar – pressure |
| MHz | megahertz |
| min | minute |
| mm | millimetre |
| Mm | megametre |
| mm/h | millimetres per hour |
| mm/m2 | millimetres/square metre – exposure |
| mol | mole |
| ms | millisecond |
| mV | millivolts |
| MVA | megavolt amps |
| N | newton |
| N/m2 | newtons per square metre |
| NaCl | sodium chloride |
| nF | nanofarad |
| nm | nanometre |
| pH | alkalinity/acidity value |
| pm | picometre |
| Pm | petametre |
| R | intensity of dropfield in mm/h |
| R | resistance |
| rad/s | radians per second |
| s | second |
| S | Siemens |
| t | tonne |
| T | time |
| T | tesla |
| Tm | terametre |
| û | amplitude of voltage surge |
| Un | nominal voltage |
| V | volt |
| V/μs | volts per microsecond |
| V/km | volts per kilometre |
| Vm | volts per metre |
| W | watt |
| Wb | weber |
| W/m2 | watts per square metre – irradiance |
| yd | yard |
| ym | yocotmetre |
| Ym | yottametre |
| zm | zeptometre |
| Zm | zettametre |
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