Alphabet In physics create various quantities and units to describe natural events (also artificial) that occur. To write it, were created symbols relating to mention, who came from several sources. Some quantities and units named after its discoverer, while others are named in English. Other even more magic again. All of these symbols would need to be shortened writing, often becomes one letter only.

Sample letter used by the physicists:

A: Ampere, unit of electric current; a for acceleration or acceleration.
B: magnetic induction field. Probably derived from Biot-Savart.
C: Coulomb, unit of electric charge, c for the speed of light.
D: The electric field shift (displacement), d is often used for distance (distance)
E: Energy; electric field (electric field). e for the electric charge of electrons.
F: Force (force); f for frequency.
G: Newton's gravitational constant, g is used for the acceleration of gravity.
H: magnetic field due to electric current. Also H for Henry, the unit of inductance. h for Planck's constant.
I: Electric current.
A: The Joule, a unit of energy. Also for the electric current density.
K: Usually used as constants (eg: F = k q1 q2 / r2). k for Boltzmann's constant.
L: Liter; angular momentum, orbital quantum number. Also commonly used for long (length).
M: mass, magnetization, meters.
N: Newton, the unit of force. Also the main quantum number and the number of particles (number) in a mole.
O: Well, this letter is not used because it looks like the number zero. If only the other form, may be used as the unit of resistance, Ohm.
P: Power (power); pressure (pressure), electric polarization, p for the electric dipole moment and linear momentum.
Q: Often used in thermodynamics for business. q for electric charge.
R: usually used for the radius of the circle (radius) and distance (range).
S: Entropy. s for second (second) and spin in quantum physics.
T: Time; period; temperature. Also T for Tesla, a unit for magnetic induction field.
U: Internal energy. Sometimes used to indicate the speed, if the letter v is used.
V: The speed, the velocity. Also quantities and units of voltage (voltage and volts) and the potential in general.
W: Business (Work). Watt is a unit of power.
X, Y, Z are used as coordinates. Y for Young's modulus; in nuclear physics, Z represents the number of protons in the nucleus.