Phenomenon

The combustion of a match is an observable occurrence, or event, and therefore a phenomenon.

A phenomenon (from Greek φαινόμενoν, pl. φαινόμενα - phenomena) is any occurrence that is observable.^[1] In popular usage, a phenomenon often refers to an extraordinary event.

[edit] Use in science

In science phenomena are the subject of observation. It is any fact or event of scientific interest that is susceptible of being scientifically described and/or explained. E.g.: hypnagogic states are frequently associated with other phenomena.

In physics, a phenomenon may be a feature of matter, energy, or spacetime. For example, Isaac Newton made observations of the phenomenon of the moon's orbit. Additionally, Galileo Galilei made observations of pendulum related phenomena.^[2]

[edit] Use in gemmology

In gemmology a phenomenon is an unusual optical effect displayed by a gem. Play-of-color, labradorescence, iridescence, adularescence, chatoyancy, asterism, aventurescence and color change are all phenomena.

[edit] Use in philosophy

In philosophy, the use of the word phenomenon differs from other uses in that it refers to perceived events. Phenomena may be perceived through a person's senses or with their mind.

The term came into its modern philosophical usage through Immanuel Kant, where it is contrasted with noumenon (for which Kant used the term "Ding an sich", or "thing-in-itself") or Absolute. Phenomenon and noumenon serve as interrelated technical terms in Kant's philosophy. Noumena, in contrast to phenomena, are not directly accessible to observation. Nowadays, "phenomena" are often, but not always, understood as 'appearances'. These are themselves sometimes understood as involving qualia.

[edit] See also

• Phenomenology
• Physical system
• Observation
• Physicalism
• Noumenon
• Epiphenomenon

[edit] References