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2. Space charge - Wikipedia

   en.wikipedia.org/wiki/Space_charge

   Space charge is an inherent property of all vacuum tubes. This has at times made life harder or easier for electrical engineers who used tubes in their designs. For example, space charge significantly limited the practical application of triode amplifiers which led to further innovations such as the vacuum tube tetrode.

3. Charge carrier density - Wikipedia

   en.wikipedia.org/wiki/Charge_carrier_density

   Charge carrier density, also known as carrier concentration, denotes the number of charge carriers per volume. In SI units, it is measured in m −3. As with any density, in principle it can depend on position. However, usually carrier concentration is given as a single number, and represents the average carrier density over the whole material.

4. Telephone numbers in Romania - Wikipedia

   en.wikipedia.org/wiki/Telephone_numbers_in_Romania

   Free phone numbers start with 800 (like 0-800-xxx-xxx). Strangely, some companies to whom a numbering class is allocated may not grant toll-free access to those numbers for other networks. Therefore, sometimes a "toll-free" number is advertised as "toll free only within some operator". Some 08pp prefixes are used for various services, like:

5. Wikipedia : The Free Encyclopedia

   en.wikipedia.org/wiki/Wikipedia:The_Free...

   "An encyclopedia that anyone can edit" does not refer to the legal or ethical right of any editor to contribute content supporting their own point of view. Some editors understand the "anyone can edit" part of "the free encyclopedia that anyone can edit" as an extension of the word "free".

6. Pickett's Charge - Wikipedia

   en.wikipedia.org/wiki/Pickett's_Charge

   Pickett's Charge (July 3, 1863), was an infantry assault on the last day of the Battle of Gettysburg in Pennsylvania during the Civil War.Ordered by Confederate General Robert E. Lee against Major General George G. Meade's Union positions on Cemetery Hill, the attack was a costly mistake that decisively ended Lee's invasion of the north and forced a retreat back to Virginia.

7. Free Online Games: Play board games, card games, casino games ...

   www.aol.com/games

   Discover the best free online games at AOL.com - Play board, card, casino, puzzle and many more online games while chatting with others in real-time.