|
|
| Unit and conversion factor |
|
|
| Illuminance
(光照度) |
lux |
1 lx = 1 lm/m² |
SI unit |
| Density (物質密度) |
|
kg/m³ |
SI unit, usually given in g/ml or g/cm³ |
Rotational speed
(旋轉速度) |
revolutions per minutes |
1 min-1 = 1 UpM = 1/60s-1 = 1 min-1 |
SI unit |
| Pressure (壓力) |
| Pascal |
| bar |
| phys. atmosph. |
| techn. atmosph. |
| meter water column |
| mm mercury |
|
| 1 Pa = 1 N/m² |
| 1 bar = 10·5Pa |
| 1 atm = 1.01325 · 10·5Pa |
| 1 at = 1 kp/cm² |
| 1 mWS = 9.790 · 10³Pa |
| 1 mmHg = 1 Torr = 1.3332 · 10²Pa |
|
SI unit, see also tables "Conversion
factors for pressure units" and "Conversion from Anglo-Saxon units to metric
units" |
| Area (面積) |
|
| 1 m² = 1 m · 1 m = 1 qm |
| 1 a = 10² m² |
| 1 ha = 100000m² |
|
SI unit |
| Frequency (頻率) |
hertz |
1 Hz = 1 S-1 |
SI unit for periodic processes |
| Speed (速度) |
| meter per second |
| kilometer per hour |
|
|
SI unit |
| Exposure rate
(曝光率) |
|
| C/kg |
| 1 R = 2.58 · 10 4 C/kg |
|
SI unit |
Capacitance, electrical
(電容量) |
|
| 1 F = 1 C/V = 1 A² · s/W = 1
s/W |
| 1 F int = 0.99951 F |
|
SI unit |
| Force (力量) |
|
| 1 N = 1 kg · m/s² |
| 1 P = 9.807 · 10 -3N |
| 1 dyn = 10 -5N |
|
SI unit |
| Charge, electrical
(電荷) |
coulomb |
1 C = 1 A · s = 1 J/V |
SI unit |
| Length (長度) |
| meter |
| micron or my |
| angstram |
| fermi |
| inch |
|
| 1 m |
| 1 µ = 10 · 6m |
| 1 Å = 10 -10m |
| 1 f = 10 -15m |
| 1" = 25.4 mm |
|
Basic SI unit |
| Power (電力) |
|
| 1 W = 1 J/s |
| 1 hp = 0.735 kW |
|
SI unit p e |
| Luminance (發光強度) |
| candela per square meter |
| nit |
| stilb |
| lambert |
|
| 1 cd/m² |
| 1 nt = 1 cd/m² |
| 1 sb = 1 cd/cm² |
| 1 la = 1/p sb = 1/p cd/cm² |
|
SI unit |
| Mass (weight)
(質量) |
| kilogram |
| gram |
| tonne |
| metric carat |
| atomic unit of mass |
| dalton |
|
| 1 kg |
| 1 g = 10 -3 kg |
| 1 t = 10 3 kg |
| 1 Kt = 0.2 g |
| 1 u = 1 amu = 1.6605·10 -27 kg |
| 1 Dalton = 1.6602·10 -27 kg |
|
Basic SI unit only for precious stones |
Electric
potential
(電位) |
|
| 1 V = 1 J/C = 1 W/A |
| Vint = 1.00034V |
|
SI unit, also electromotive force |
Sub. concentration
(濃度) |
| molarity |
| molality |
| normality |
|
|
|
Current, electrical
(電流) |
|
| 1 A = 1 C/S |
| 1 Aint = 1.000291 A |
|
Basic SI unit |
| Temperature
(溫度) |
| kelvin |
| degree celsius |
| degree kelvin |
| degree fahrenheit |
| degree rankine |
| degree reaumur |
|
| K = ºC + 273.15 |
| ºC = K - 273.15 |
| ºK = K |
| ºF = 1.8K - 459.4 |
| ºRank = 1.8K |
| ºR = 1.25ºC |
|
Basic SI unit |