Thursday, March 13, 2008

Ethanol

Ethanol, also known as ethyl alcohol, drinking alcohol or grain alcohol, is a combustible, colorless chemical complex, and is best known as the alcohol found in thermometers and alcoholic beverages. In common usage, it is often referred to simply as alcohol. It is a straight-chain alcohol and its molecular formula is variously represented as EtOH, CH3CH2OH, C2H5OH or as its experimental formula C2H6O.

After the use of fire, fermentation of sugar into ethanol is perhaps the initial organic reaction known to kindness, and the invigorating effects of ethanol expenditure have been known since ancient times. In modern times ethanol intended for industrial use has also been produced from byproducts of petroleum refining.

Ethanol has prevalent use as a solvent for substances intended for human contact or expenditure, including scents, flavorings, colourings, and medicines. In chemistry it is both an indispensable solvent and a feedstock for the synthesis of other products. Ethanol has a long history as a fuel, including as a fuel for internal incineration engines.

Monday, March 10, 2008

God

God most commonly refers to the divinity worshiped by followers of monotheistic and monolatrist religions, whom they believe to be the creator and boss of the universe.

Theologians have ascribed a variety of attributes to the various conceptions of God. The most common among these include omniscience, omnipotence, omnipresence, omnibenevolence, divine simplicity, covetousness, and eternal and necessary subsistence. God has also been conceived as being incorporeal, a personal being, the source of all moral obligation, and the "greatest conceivable existent". These attributes were all supported to varying degrees by the early Jewish, Christian and Muslim theologian philosophers, including Augustine of Hippo, Al-Ghazali, and Maimonides. Many notable medieval philosophers developed arguments for the subsistence of God, attempting to wrestle with the perceptible contradictions implied by many of these attributes. Philosophers have developed many arguments for and against the subsistence of God.