Table of simple cubic graphs: Difference between revisions

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{{expert|date=October 2010}}
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'''Low level injection''' conditions for a [[P-N junction]] refers to the state where  the number of carriers generated are small compared to the [[background doping density]] of the material. Essentially, the semiconductor's majority carrier concentration will remain (relatively) unchanged, while the minority carrier concentration sees a large increase. In this condition [[Carrier generation and recombination|minority carrier recombination]] rates are linear.<ref>Jenny Nelson, The Physics of Solar Cells, Imperial College Press, UK, 2007 pp. 266-267</ref>
 
The following equation must be satisfied for a semiconductor under carrier injection conditions, where n is the number of electrons, delta N is the excess carriers injected into the semiconductor and n0 is the equilibrium concentration of electrons in the semiconductor:
:<math> n=\Delta n+n_0</math>
The following relation must also be true, because for every electron injected a hole must also be created to keep a balance of charge:
:<math> \Delta n=\Delta p </math>
 
The assumption of low level injection can be made regarding an n-type semiconductor, which affects the equations in the following way:
:<math> \Delta n<<N_D </math>
: Therefore <math> n=N_D </math> and <math>p=\Delta p+p_0</math>.
 
In comparison a [[semiconductor]] in [[high injection]] means that the number of generated [[Charge carrier|carrier]]s is large compared to the background doping density of the material. In this condition minority carrier recombination rates are proportional to the number of carriers squared<ref>R. R. King, R. A. Sinton, and R. M. Swanson, Doped Surfaces in one sun, point-contact solar cells, Appl. Phys. Lett. 54 (15), 1989 pp. 1460-1462</ref>
 
==References==
{{Reflist}}
 
[[Category:Semiconductors]]

Latest revision as of 15:11, 18 December 2014



The primary known knives were developed in the course of the Stone Age. These knives have been fabricated from flint, which may simply be chipped and scaled to form. Later types of the flint knife have been floor to their desired form. The advancing of expertise brought with it new materials for knife making, together with bronze, copper, and the iron based mostly supplies from which most modern-day knives are made from. A medium stockman knife Sunfish The sunfish is a big design with a straight handle with two bolsters. The blades are often short (lower than three inches (seventy six mm)), however each the deal with and blades are very vast. Sunfish knives usually have two blades.

Possibly you’re pondering that it’s not so vital. A sharpening angle would not really matter as long as you can also make it sharp. Enable me to reply freely. Don’t suppose that approach. Take those ideas right out of your head proper now. The sharpening angle is monumentally vital. Even have been you to attain sharpness with an incorrect angle, you'll be sharpening again before you realize it. It just will not final. Compare the angles of different types of knives to each other. Examine their angles rigorously and consider how each is meant to be used. You’ll see it plainly. It actually does matter.

Other causes I love these little knives are their gentle weight, ease of use, skill to hold a scalpel edge, and spectacular sturdiness. The shear quantity of chopping abuse I have thrown at this little knife over time and has been intensive. I'm not using it to pry open wooden crates, but I have used the ring finish as a screwdriver and to frivolously pry open various issues extra instances than I can bear in mind, and it has held up. The nice factor is that that same exact quality and design I purchased about a decade ago is retained within the existing design.

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The nuclear powered plane carrier USS Enterprise was in port and Hobart was crawling with 1000's of sailors on R&R. I found Janet and her housemate entertaining two African-American sailors from Detroit. After chatting for half an hour with the ladies and their guests Janet and I alternate the rifle for cash and I said my goodbye. The sailors expressed shock that I was planning to stroll out onto the street carrying the rifle. “But you guys come from the land of guns” was my reply. In turn they explained, that in the event that they did that in Detroit, the cops would have them up against the wall. Paradise Lost?

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