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G8MNY > TECHNI 04.01.21 11:30l 74 Lines 2864 Bytes #999 (0) @ WW
BID : 18653_GB7CIP
Read: GAST
Subj: Unit Madness
Path: DB0FFL<OE2XZR<OE5XBL<DB0RBS<DB0ERF<IZ3LSV<IK5FKA<IK5FKA<LU9HGS<LU3DVN<
LU4DRH<PY2BIL<OK2PEN<GB7CIP
Sent: 210104/1015Z @:GB7CIP.#32.GBR.EURO #:18653 [Caterham Surrey GBR]
From: G8MNY@GB7CIP.#32.GBR.EURO
To : TECH@WW
By G8MNY (Updated Aug 12)
After helping with a local ham radio course, I realise how confusing some of
the units, symbols, & names are to new comers.
Here is a short look at the problem if the names/units/symbols get misused or
are unclear. They can normally be distinguished by the context & a thorough
knowledge of the subject concerned.
UNIT/
SYMBOL POSSIBLE MEANINGS
A Amperes, Area (a), Acceleration, ngstrom, Atto 10^-18, Attenuation,
Altitude, Argon.
B Magnetic Induction, Bars, Boron.
C Coulomb, Capacitance, Centigrade/Celsius, Calories, Speed of Light,
Cycles, Carbon.
D Distance, Density, Dynes, Direction, Drag.
E Energy, Electric Fields, EMF, PD, Voltage, (e)rgs, Exa 10^18.
F Farad, Frequency Occurance, Force, Feet (Ft), Femto 10^-15, Fluorine.
G Force of Gravity, Giga 10^9, Conductance, (g)rams, Gauss, Gain.
H Henrys, Magnetic Field, Height, Hertz (Hz), Hydrogen.
I Current, Inductance, Inertia, Iodine, Imaginary in Maths.
J Jules, (j) imaginary in Electrical.
K Kelvin, (k)ilo 10^3, Potassium, Any Constant.
L Lumens (Lm), (l)itre, Lux (Lx) Inductance, Loss, Length, Lift.
M Mass, Moments, (m)etre, Mega 10^6, (m)illi 10^-3. Mile (Mi), Mo(1/).
N Newton, Nano 10^-9, Nitrogen.
O rsteds, Oxygen.
P Power, Pressure, Pascal (Pa), (p)ico 10^-12, Peta 10^15, Phosphorus.
Q Charge, Resonant gain.
R Resistance, Radius, Reluctance.
S Siemens, (s)econds, Suseptance, Speed, Distance, Sulphur.
T Tesla, Tonne, Ton, Torque, Temperature, Network Type.
U Uranium, (U Signal Phase Axis). (U can be voltage says DK3UZ)
V Voltage, velocity, Volume, Vanadium, (signal Phase Axis).
W Watts, Work, Weight (Force), Tungsten.
X Reactance, Left Right Axis, Unknown.
Y Up Down Axis, Yttrium, (Luminance Signal), Unknown.
Z AC Impedance, Far Near Axis, Network Type, Unknown.
Permeability, micro.
Ohms.
Pi, Network Type.
Delta, a Little bit.
,\ Lamda, wavelength.
(ohms etc. View in code page 437 Terminal Font)
And some more from LW1DSE
(Alpha) for some angles.
(Beta) for DC current gain in BJT's.
as a chain of multiplies.
(Sigma) for reiterative summation.
(mu) for the gain in triodes (tubes or valves), magnetic permeability.
w (as omega) = 2 * * f.
(rho) as specific gravity, reflection coeficient.
B as Back Electromotive Force.
(eta?) as turns ratio in transformers.
(as Delta) for density.
G for Gm, transconductance in valves.
R, S, T, U, V, W for 3 phase electric systems.
X for an indepent variable in math.
Y for dependent var in math.
Why Don't U send an interesting bul?
73 De John G8MNY
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