Speed

In everyday use and in kinematics, the speed of an object is the magnitude of its velocity (the rate of change of its position); it is thus a scalar quantity. The average speed of an object in an interval of time is the distance travelled by the object divided by the duration of the interval; the instantaneous speed is the limit of the average speed as the duration of the time interval approaches zero.

Like velocity, speed has the dimensions of a length divided by a time; the SI unit of speed is the metre per second, but the most common unit of speed in everyday usage is the kilometre per hour or, in the US and the UK, miles per hour. For air and marine travel the knot is commonly used.

The fastest possible speed at which energy or information can travel, according to special relativity, is the speed of light in a vacuum c = 7008299792458000000♠299792458 metres per second (approximately 7008299722222222222♠1079000000 km/h or 7008299963840000000♠671000000 mph). Matter cannot quite reach the speed of light, as this would require an infinite amount of energy. In relativity physics, the concept of rapidity replaces the classical idea of speed.

Gift

A gift or a present is an item given to someone without the expectation of payment. An item is not a gift, if that item, itself, is already owned by the one to whom it is given. Although gift-giving might involve an expectation of reciprocity, a gift is meant to be free. In many countries, the act of mutually exchanging money, goods, etc. may sustain social relations and contribute to social cohesion. Economists have elaborated the economics of gift-giving into the notion of a gift economy. By extension the term gift can refer to anything that makes the other happier or less sad, especially as a favor, including forgiveness and kindness. Gifts are also first and foremost presented on occasions - birthdays and Christmas being the main examples.

Presentation

In many cultures gifts are traditionally packaged in some way. For example, in Western cultures, gifts are often wrapped in wrapping paper and accompanied by a gift note which may note the occasion, the recipient's name, and the giver's name. In Chinese culture, red wrapping connotes luck. Although inexpensive gifts are common among colleagues, associates and acquaintances, expensive or intimate gifts are considered more appropriate among close friends, romantic interests or relatives.

Best

Best or The Best may refer to:

Geography

People

Companies and organizations

Food and drink

Medicine

Games

Acronyms

Exit

Computing

Music

Albums

Television, film, and theatre

Trance

Trance denotes any state of awareness or consciousness other than normal waking consciousness. Trance states may occur involuntarily and unbidden.

The term trance may be associated with hypnosis, meditation, magic, flow, and prayer. It may also be related to the earlier generic term, altered states of consciousness, which is no longer used in "consciousness studies" discourse.

Etymology

Trance in its modern meaning comes from an earlier meaning of "a dazed, half-conscious or insensible condition or state of fear", via the Old French transe "fear of evil", from the Latin transīre "to cross", "pass over". This definition is now obsolete.

Working models

Wier, in his 1995 book, Trance: from magic to technology, defines a simple trance (p. 58) as a state of mind being caused by cognitive loops where a cognitive object (thoughts, images, sounds, intentional actions) repeats long enough to result in various sets of disabled cognitive functions. Wier represents all trances (which include sleep and watching television) as taking place on a dissociated trance plane where at least some cognitive functions such as volition are disabled; as is seen in what is typically termed a 'hypnotic trance'. With this definition, meditation, hypnosis, addictions and charisma are seen as being trance states. In Wier's 2007 book, The Way of Trance, he elaborates on these forms, adds ecstasy as an additional form and discusses the ethical implications of his model, including magic and government use which he terms "trance abuse".