Transient
From Free net encyclopedia
- "Transient" is also a comparatively polite term for a homeless person.
Transient means passing with time. For example, a damped oscillator needs some time after a temporary disturbance to reach the equilibrium again, and after a permanent change in system variables, to reach the new equilibrium.
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Acoustics, Audio
A transient is a short-duration signal that represents a nonharmonic attack phase of a musical sound or spoken word. It contains a high degree of nonperiodic components and a higher magnitude of high frequencies than the harmonic content of that sound. Transients do not directly depend on the frequency of the tone they initiate.
Sonar
Transient is often used by sonar operators to refer to sudden, unnatural changes in the acoustic environmen. This is usually caused by a unnaturally fast moving object. It is most often applied for military use to refer to a probable torpedo entering the water.
Chemical engineering
A system is said to be in a transient state when a process variable has been changed and the system has not yet reached steady-state. Example: When a chemical reactor is being brought into operation, the concentrations, temperatures, and fluid flow regime are changing with time.
Civil engineering
Transient is used to refer to a water hammer pressure wave. In a pipe network, when a valve or pump is suddenly shut off, a region of high pressure builds up immediately behind the valve/pump. The high-pressure region grows as water, which was initially flowing out of the valve, suddenly becomes stationary. The border of the high-pressure zone is referred to as a pressure wave, or transient.
Computer science
In the Java programming language, transient is a keyword. When a class member is declared transient, it would not be serialized even if the class to which it belongs is serialized.
Electrical engineering
A transient system is a short-lived oscillation in a system caused by a sudden change of voltage, current, or load. Engineers use voltage regulators and surge suppressors to prevent transients in electricity from affecting delicate equipment.
Astronomy
A transient astronomical event is a phenomenon that is relatively short-lived. Examples include supernovae, comets, and meteors.
Japan
A feeling of transience, called Mono no aware, has been important in Japanese culture.
User Interface Design of Mobile Phone
A transient screen is a pop-up screen such as Notification screen or Dialog screen in mobile phone. It covers only part of full screen and background will be dimmed. It gives context to user for understanding what is going on background and user can return to background by dismissing the transient screen.
See also
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