Thursday, June 30, 2005

Intermediate Vector Boson

Type of boson associated with the electromagnetic and weak forces in unified form. See W particle.

Wednesday, June 22, 2005

Paraffin Hydrocarbon

Also called  >alkane  any of the saturated hydrocarbons having the general formula CnH2n+2, C being a carbon atom, H a hydrogen atom, and n an integer. The paraffins are major constituents of natural gas and petroleum. Paraffins containing fewer than 5 carbon atoms per molecule are usually gaseous at room temperature, those having 5 to 15 carbon atoms are usually liquids, and the straight-chain

Thursday, June 16, 2005

Serbia And Montenegro, Zeta

The Slav peoples were organized along tribal lines, each headed by a zupan (chieftain). In this part of the Adriatic littoral, from the time of the arrival of the Slavs up to the 10th century, these local magnates often were brought into unstable and shifting alliances with other larger states, particularly with Bulgaria, Venice, and Byzantium. Between 931 and 960 one such zupan, Ceslav,

Friday, June 03, 2005

Ear Disease, Ototoxic drugs

Ototoxic (harmful to the ear) drugs can cause temporary and sometimes permanent impairment of auditory nerve function. Salicylates such as aspirin in large enough doses may cause ringing in the ears and then a temporary decrease in hearing that ceases when the person stops taking the drug. Quinine can have a similar effect but with a permanent impairment of auditory

Wednesday, June 01, 2005

Teaching Machine

There are many types of teaching machines. In general, they all work on the same method, which is to present a question, have the user indicate the answer, and then provide the user with the correct answer. Some machines may be extremely simple, such as test sheets or books so programmed that