Terms beginning with C

A | B | C | D | E | F | G | H | I | L | M | N | O | P | R | S | T | U | V | W

A global or oval body enclosed in a membrane, found in all cells.  The nucleus contains the genetic material (DNA) of the cell.קרא עוד >

A wireless portable telephone containing a transmitter and receiver that emit and receive radio frequency (RF) electromagnetic radiation.קרא עוד >

Technology that enables the use of mobile phones.  It is based on the geographic division of the communication area covered into cells, using a given number of frequencies (or channels), allowing a large number of subscribers to conduct conversations simultaneously.  A mobile phone (or cellular phone) is a bi-directional instrument that can transmit and receive simultaneously.קרא עוד >

A structure carrying the genetic material, composed of DNA molecules and proteins that fold it into a three-dimensional structure.קרא עוד >

A statistical measure that describes the relationship between two variables, i.e. to what extent a change in one variable will cause a change in the second one.קרא עוד >

The amount of particles of matter or energy (photons) passing through a unit of area.The density of an electric current refers to the size of the electric charge passing through a unit of area per unit of time.Current density is measured in amperes/m2.קרא עוד >