Differences between version 2 and revision by previous author of PVC.
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| Newer page: | version 2 | Last edited on Thursday, November 21, 2002 5:57:19 pm | by JohnMcPherson | Revert |
| Older page: | version 1 | Last edited on Thursday, November 21, 2002 9:57:51 am | by CraigMckenna | Revert |
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[Acronym] for __P__ermenant __V__irtual __C__ircuit
A connection-oriented circuit that may be set up by software between any two nodes of a switched network.
-
+----
and also __P__oly__V__inyl __C__hloride
A plastic composed of 43% of oil products and 57% of salt as raw material.
Therefore it uses less exhaustible raw materials and less energy than any other plastic or many 'classic' materials.
This makes it excellent for sustainable development. [PVC] has an extremely wide range af applications, from toys via (waste) water lines to bloodbags.
+
+Oh oh! I know this one!%%%
+<Chemistry>%%%
+PVC is basically a long chain of organic molecules. (Organic simply means carbon-based). The molecules have an alcohol group at one end (COOH) and an ammonia (NH2) group at the other:
+ H - N (rest of molecule) - C = O
+ | |
+ H OH
+
+They join together; the N drops an H and the C drops the OH. These form a water molecule (H20). This type of link is called a ''peptide bond''.
+
+ ...(rest1) - C - N - (rest2)...
+ ||
+ O
+</Chemistry>%%%
+I know you really don't care, but I haven't done this stuff since first year, and it was fun....
