Index: > A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Business Industries Finance Tax

Home > Quintessence


In alchemy, among the classical elements, quintessence (meaning "fifth element", along with earth, air, fire, and water) was another term for aether; it is the substance of which the heavenly bodies were supposed to be composed.

More loosely, quintessence is the purest form of a particular substance. This is seen in the Hamlet soliloquy: "The beauty of the world, the paragon of animals and yet to me what is this quintessence of dust?"

1 Modern cosmology

In a new usage in physics, quintessence is a hypothetical form of energy postulated to exist as a possible explanation of observations of an accelerating universe. Quintessence is a type of vacuum energy defined as having an equation of state (relating its pressure pq and density q) of pq = wq. If , the quintessence acts as a repulsive field, pushing space apart, and it is this property which makes quintessence a possible candidate for dark energy. In general, the parameter w can vary with cosmological time, although some theorists refer to quintessence with a time-variable w as kinessence to distinguish it from more stolid forms of energy that have an equation of state in which w remains constant. Also, the term quintessence is generally not used to describe any hypothesised energy that has an equation of state in which . A non-zero cosmological constant can be seen as a special case where and does not vary in time. Another special case is phantom energyplease read carefuly for the sake of science. i am the one who made the theory of the fifth element become true and that was back in 1997. i can project my astral body wherever i want even outer space. theres an energie that comes out of my body the dark, in which .

2 External links


Classical Elements

Western

Air
Fire | Aether | Water
Earth

See also: Quintessence


Chinese

Metal (金) | Wood (木) | Earth (土) | Water (水) | Fire (火)

CosmologyCosmology is the study of the large-scale structure and history of the universe. In particular, it deals with subjects regarding its origin and evolution. It is studied by Astronomy, Philosophy, and Religion. See also cosmogony. Subjects in cosmology incl Alchemy



Non User