Formulary Formulary
The formula is very helpful with recurring arithmetic operations. Instead of again and again new find out, what is to be done with the length and width of a rectangle, in order to calculate its area, one should generally note this approach. This can happen in the form
If one now uses the initial letters of the internationally valid, usually terms taken from the English language for the terms area, length and width, would have to stand there
A formula is thus a description, which arithmetic operations are to be applied to the designator necessary for the calculation.
Dimension/ | Units | Conversation | |
 | Angel (at the wheel) | ° (grad) | 1° = 60' (angle minutes) 1 ' = 60" (angle seconds) |
 | Angel (at the steering wheel) | ° (grad) | |
 | (Ignition interval) angel | ° (grad) | |
 | Compression ratio | ||
 | Efficency | ||
 | Air/fuel ratio | ||
 | Friction | ||
 | circumference/diameter | 3,14159 ... | |
 | Density | g/cm³ | 1 g/cm³ = 1 kg/dm³ = 1 t/m³ |
 | (Mechanical) tension | N/mm² | |
| a | acceleration | m/s² | |
| A | Area | mm², cm², dm², m², km² | 1 km²=1.000.000 m² =10.000 cm² =100 dm² |
| b | Width | mm, cm, dm, m | 1 m = 10 dm = 100 cm = 1000 mm |
| c | Fuel consumption | l/100 km | |
| d | Diameter, bore | mm, cm | 1 cm = 10 mm |
| E | Energy | Nm, Ws, J, kJ (Joule), kWh | 1 Nm = 1 Ws = 1 J 1 kJ = 1000 J 1 kWh = 3600 kJ |
| f | Frequency | Hz (Herz), s-1 (1/s) | 1 Hz = 1 Oszillation/s. |
| F | Force | N, daN, kN | 1 kN = 100 daN 1 daN = 10 N 1 N = 1 kg·m/s² |
| g | Acceleration of gravity | 9,81 m/s² | |
| G | Weight | N, daN, kN | 1 kN = 100 daN 1 daN = 10 N 1 N = 1 kg·m/s² |
| h | Height | mm, cm, dm, m | 1 m = 10 dm = 100 cm = 1000 mm |
| i | Ratio | ||
| I | Current | A (Ampere) | 1 A = 1000 mA |
| K | Capacitance | Ah (Amperehours) | |
| l | Length | mm, cm, dm, m, km | 1 Seemeile = 1,852 km 1 Landmeile = 1,609 km 1 km = 1000 m 1 m = 10 dm = 100 cm = 1000 mm 1 Inch = 25,4 mm |
| m | Mass | g, kg, t (Tonne) | 1 t = 1000 kg 1 kg = 1000 g 1 pound (lb) = 453,59 g |
| M | Torque | Nm (Newtonmeter) | 1 N · 1 m = 1 Nm |
| n | numbers of revolutions | s-1 (1/s) min-1 (1/min) | 1 min-1 = 60 s-1 |
| p | pressure | Pa (Pascal) mbar, bar, N/cm² | 1 bar = 10 N/cm² 1 bar = 1000 mbar 1 bar = 100.000 Pa |
| P | Power | VA (Volt·Ampere), W (Watt), kW, PS (Horsepower) | 1 W = 1 J/s = 1 Nm/s = 1 kg·m²/s³ 1 W = 1 VA 1 kW = 1000 W 1 kW = 1,3596 PS 1 PS = 735,5 W |
| Q | Heat quantity | Nm, Ws, J, kJ (Joule) | 1 Nm = 1 Ws = 1 J 1 kJ = 1000 J |
| r | Radius, lever arm | mm, cm, dm, m | 1 m = 10 dm = 100 cm = 1000 mm |
| R | Resistance | M , k, , m (Ohm) | 1 M = 1000 k 1 k = 1000 1 = 1000 m |
| s | Distance, stroke | mm, cm, dm, m, km | 1 km = 1000 m 1 m = 10 dm 1 dm = 10 cm 1 cm = 10 mm |
| t | Time (time) | h, min, s | 1 h = 60 min 1 min = 60 s |
| t | Temperature | °C (grad Celsius) | 0 °C = 32 °F, 100 °C = 212 °F |
| T | Periodic time | s (second) | |
| T | Temperature | K (Kelvin) | 0 °C = 273 K, 100 °C = 373 K |
| v | Velocity (velocity) | km/h | 1 m/s = 3,6 km/h 1 km/h = 0,278 m/s |
| U | Voltage | V (Volt) | 1 V = 1000 mV |
| V | Volume | mm³, cm³ (ml), dm³ (Liter), m³ | 1 m³ = 1000 dm³ (Liter) 1 dm³ (Liter) = 1000 cm³ (ml) 1 cm³ (ml) = 1000 mm³ 1 barrel = 159 dm³ (Liter) 1 gallon = 3,79 dm³ (Liter) |
| W | Work | Nm, Ws, J, kJ (Joule) | 1 Nm = 1 Ws = 1 J 1 kJ = 1000 J |