Aesthetics, or the philosophy of art, is the study of beauty and taste. It is about interpreting works of art and art movements or theories. The term aesthetic is also used to designate a particular style, for example the "chess aesthetics", or the "Japanese aesthetic".
As well as being applied to art, aesthetics can also be applied to cultural objects. Aesthetic design principles include ornamentation, edge delineation, texture, flow, solemnity, symmetry, color, granularity, the interaction of sunlight and shadows, transcendence, and harmony.
The word aesthetic is also an adjective and adverb relating to cosmetology and medicine, as in aesthetic medicine.
Also spelt æsthetics and esthetics, the word is derived from the Ancient Greek αἰσθητικός (aisthetikos, meaning "esthetic, sensitive, sentient, pertaining to sense perception"), which in turn was derived from αἰσθάνομαι (aisthanomai, meaning "I perceive, feel, sense").
The idea of the aesthetic developed from the idea of taste and beauty. Before the early 1700s, thinkers developed general theories of proportion and harmony, detailed most specifically in architecture and music. An extended, philosophical reflection on aesthetics emerged with the widening of leisure activities in the eighteenth century.
In the pre-modern tradition, the aesthetics of music or musical aesthetics explored the mathematical and cosmological dimensions of rhythmic and harmonic organization. In the eighteenth century, focus shifted to the experience of hearing music, and thus to questions about its beauty and human enjoyment (plaisir and jouissance) of music. The origin of this philosophic shift is sometimes attributed to Baumgarten in the 18th century, followed by Kant. Through their writing, the ancient term aesthetics, meaning sensory perception, received its present-day connotation. In recent decades philosophers have tended to emphasize issues besides beauty and enjoyment. For example, music's capacity to express emotion has been a central issue.
Aesthetics is a sub-discipline of philosophy. In the 20th century, important contributions were made by Peter Kivy, Jerrold Levinson, Roger Scruton, and Stephen Davies. However, many musicians, music critics, and other non-philosophers have contributed to the aesthetics of music. In the 19th century, a significant debate arose between Eduard Hanslick, a music critic and musicologist, and composer Richard Wagner regarding whether instrumental music could communicate emotions to the listener. Harry Partch and some other musicologists, such as Kyle Gann, have studied and tried to popularize microtonal music and the usage of alternate musical scales. Also many modern composers like La Monte Young, Rhys Chatham and Glenn Branca paid much attention to a system of tuning called just intonation.