Introduction to electromagnetism is a quantity used to determine how a particle will behave in an electric field. There are three possible "types" of charge: positive, negative, and neutral. However, the distinction between positive and negative is by convention only. Electric charge is quantized in units of the elementary charge, formula_1, where a proton has a charge of formula_2 and an electron has a charge of formula_3. The SI unit of charge is the coulomb. The elementary charge formula_1 was first measured by Robert Millikan in his oil drop experiment in which the electric force on the particle is set to exactly counter
Barak (given name) Barak (given name) The given name Barak, also spelled Baraq, from the root "B-R-Q", is a Hebrew name meaning "lightning". It appears in the Hebrew Bible as the name of Barak ( ""), an Israelite general. It is also an Arabic name from the root "B-R-K" with the meaning of "blessed" though it is mostly in its feminine form "Baraka(h)". The Semitic root "B-R-Q" has the meaning "to shine"; "lightning". The biblical name " is given after Barak, a military commander who appears in the Book of Judges. The Arabic cognate is ' (not to be confused with ', which