Envelope (music): In sound and music, an envelope describes how a sound changes over time. For example, a piano key, when struck and held, creates a near-immediate initial sound which gradually decreases in volume to zero. (Music) [100%] 2023-11-22 [Synthesiser modules]
Envelope (mathematics): In geometry, an envelope of a planar family of curves is a curve that is tangent to each member of the family at some point, and these points of tangency together form the whole envelope. Classically, a point on the ... (Mathematics) [100%] 2023-11-04 [Differential geometry] [Analytic geometry]...
Envelope: of a family of curves in the plane The curve that at every point touches one of the curves of the family such that the points of contact along the envelope pass from one curve of the family to another ... (Mathematics) [100%] 2023-11-02
Envelope (waves): In physics and engineering, the envelope of an oscillating signal is a smooth curve outlining its extremes. The envelope thus generalizes the concept of a constant amplitude into an instantaneous amplitude. (Waves) [100%] 2022-03-14 [Interference] [Interferometry]...
Envelope (motion): In mechanical engineering, an envelope is a solid representing all positions which may be occupied by an object during its normal range of motion. Another (jargon) word for this is a "flop". (Motion) [100%] 2023-11-01 [Mechanical engineering] [Robot control]...
Envelope (category theory): In :Category theory and related fields of mathematics, an envelope is a construction that generalizes the operations of "exterior completion", like completion of a locally convex space, or Stone–Čech compactification of a topological space. A dual construction is called ... (Category theory) [100%] 2023-11-02 [Category theory] [Duality theories]...
Envelope (motion): In mechanical engineering, an envelope is a solid representing all positions which may be occupied by an object during its normal range of motion. Another (jargon) word for this is a "flop". (Motion) [100%] 2023-10-31 [Mechanical engineering] [Robot control]...
Envelope (radar): Radar envelope is a critical Measure of Performance (MOP) identified in the Test and Evaluation Master Plan (TEMP). This is the volume of space where a radar system is required to reliably detect an object with a specific size and ... (Radar) [100%] 2024-05-14 [Radar]
Entelopes: Entelopes is a genus of longhorn beetles of the subfamily Lamiinae, containing the following species: subgenus Aspineoentelops Hua, 1990 subgenus Entelopes subgenus Mustafaia Özdikmen, 2008 (nomen novum for Shelfordia Breuning, 1954) subgenus Wallaceentelopes Breuning, 1954 Wikidata ☰ Q14833616 entry. (Biology) [75%] 2025-04-28 [Saperdini]
Viral envelope: A viral envelope is the outermost layer of many types of viruses. It protects the genetic material in their life cycle when traveling between host cells. (Biology) [70%] 2023-02-17 [Virology]
Envelope detector: An envelope detector (sometimes called a peak detector) is an electronic circuit that takes a (relatively) high-frequency amplitude modulated signal as input and provides an output, which is the demodulated envelope of the original signal. The capacitor in the ... (Engineering) [70%] 2022-10-22 [Audio engineering] [Communication circuits]...
Moreau envelope: The Moreau envelope (or the Moreau-Yosida regularization) M f {\displaystyle M_{f}} of a proper lower semi-continuous convex function f {\displaystyle f} is a smoothed version of f {\displaystyle f} . It was proposed by Jean-Jacques Moreau in ... [70%] 2023-11-12 [Mathematical optimization]
Cell envelope: The cell envelope comprises the inner cell membrane and the cell wall of a bacterium. In gram-negative bacteria an outer membrane is also included. (Protective outer structure of bacterial cells) [70%] 2023-10-31 [Cells]
Green envelope: A green envelope (Malay: sampul hijau or sampul duit raya) is a Malay adaptation of the Chinese red envelope custom. During the festival of Eid ul-Fitr, Muslims in Malaysia, Brunei, Singapore, and Indonesia hand out money in green envelopes ... [70%] 2023-10-31 [Malay culture] [Giving]...
Building envelope: A building envelope is the physical separator between the conditioned and unconditioned environment of a building including the resistance to air, water, heat, light, and noise transfer. The building envelope (or the more modern term, building enclosure) is all of ... (Physics) [70%] 2023-01-25 [Thermal protection]
Red envelope: In East and Southeast Asian cultures, a red envelope, red packet or red pocket (simplified Chinese: 红包; traditional Chinese: 紅包;. (Chinese Gift Envelope) [70%] 2022-10-30 [Chinese culture] [Chinese inventions]...
Cell envelope: The cell envelope is the cell membrane and cell wall plus an outer membrane, if one is present. Most bacterial cell envelopes fall into two major categories: Gram positive and Gram negative. [70%] 2023-11-02 [Microbiology]
Envelope journalism: Envelope journalism (also envelopmental journalism, red envelope journalism, white envelope journalism, Ch'ongi, wartawan amplop) is a colloquial term for the practice of bribing corrupt journalists for favorable media coverage. The term brown envelope journalism is common in English-speaking ... [70%] 2023-09-29 [Journalism ethics]
Flight envelope: In aerodynamics, the flight envelope, service envelope, or performance envelope of an aircraft or spacecraft refers to the capabilities of a design in terms of airspeed and load factor or atmospheric density, often simplified to altitude. The term is somewhat ... (Aerodynamic performance of an air or spacecraft) [70%] 2023-11-06 [Aerospace engineering] [Aircraft aerodynamics]...
Viral envelope: Articles Most recent articles on Viral envelope Most cited articles on Viral envelope Review articles on Viral envelope Articles on Viral envelope in N Eng J Med, Lancet, BMJ Media Powerpoint slides on Viral envelope Images of Viral envelope Photos ... [70%] 2023-03-08 [Virology]
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