Galvanic cell bridge zinc ions leave and anions enter the zinc half-cell. In the copper half-cell, the copper ions plate onto the copper electrode (reduction), taking up electrons that leave the external conductor. Since the Cu ions (cations) plate onto the copper electrode, the latter is called the cathode. Correspondingly the zinc electrode is the anode. The electrochemical reaction is: In addition, electrons flow through the external conductor, which is the primary application of the galvanic cell. As discussed under #Cell voltage, the emf of the cell is the difference of the half-cell potentials, a measure of the relative ease of dissolution
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