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  • Topic: Atom, Neutron, Proton
  • Pages : 2 (343 words )
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  • Published : January 2, 2013
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Atom Definition: An atom is the defining structure of an element, which cannot be broken by any chemical means. A typical atom consists of a nucleus of protons and neutrons with electronsorbiting this nucleus. 

Atom Examples: hydrogen, carbon-14, zinc, cesium, Cl- (a substance can be an atom and an isotope or ion at the same time)

ionization
 
Process in which an atom or molecule acquires a positive charge (by losing electrons) or negative charge (by gaining electrons). Atomic Number Definition: The number of protons in an element. 

Examples: The atomic number of hydrogen is 1; the atomic number of carbon is 6. 

Also Known As: The atomic number is also known as the proton number. It may be represented by the capital letter Z. potential barrier [pə′ten·chəl ′bar·ē·ər]
(physics)
The potential in a region in a field of force where the force exerted on a particle is such as to oppose the passage of the particle through the region. Also known as barrier; potential hill "PN junction"?|

The area in a semiconductor where P-type and N-type materials are located next to each other. A PN junction allows current to flow in one direction only| Doping.
The process of changing the conductive properties of silicon by adding trace amounts of other elements. ripple
The most common meaning of ripple in electrical science is the small unwanted residual periodic variation of the direct current (dc) output of a power supply which has been derived from an alternating current (ac) source. This ripple is due to incomplete suppression of the alternating waveform within the power. Definition: A valence electron is an electron that is the most likely to be involved in a chemical reaction. They are typically the electrons with the highest value of the principle quantum number, n. Examples:

Magnesium's ground state electron configuration is 1s22s2p63s2, the valence electrons would be the 3s electrons. Depliation region
The part of a PN junction in which there are no...
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