attenuation paradox - определение. Что такое attenuation paradox
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Что (кто) такое attenuation paradox - определение

GRADUAL LOSS OF FLUX INTENSITY THROUGH A MEDIUM
Attenuate; Natural attenuation; Attenuating; Attenuation (electromagnetic radiation); Attentuate; Ultrasound attenuation; Extinction (physics); Optical extinction; Ultrasonic attenuation; Seismic attenuation
  • Diffuse reflection
  • Frequency-dependent attenuation of electromagnetic radiation in standard atmosphere.
  • Specular reflection

D'Alembert's paradox         
  • Jean le Rond d'Alembert (1717-1783)
  • Steady and separated incompressible potential flow around a plate in two dimensions,<ref>Batchelor (2000), p. 499, eq. (6.13.12).</ref> with a constant pressure along the two free streamlines separating from the plate edges.
  • wake]],<br>
•5: post-critical separated flow, with a turbulent boundary layer.
  • Pressure distribution for the flow around a circular cylinder. The dashed blue line is the pressure distribution according to [[potential flow]] theory, resulting in d'Alembert's paradox. The solid blue line is the mean pressure distribution as found in experiments at high [[Reynolds number]]s. The pressure is the radial distance from the cylinder surface; a positive pressure (overpressure) is inside the cylinder, towards the centre, while a negative pressure (underpressure) is drawn outside the cylinder.
  • circular]] cylinder in a uniform onflow.
THE THEOREM THAT, FOR INCOMPRESSIBLE AND INVISCID POTENTIAL FLOW, THE DRAG FORCE IS 0 ON A BODY MOVING WITH CONSTANT VELOCITY RELATIVE TO THE FLUID, IN CONTRADICTION TO REAL LIFE, WHERE VISCOSITY CAUSES SUBSTANTIAL DRAG, ESPECIALLY AT HIGH VELOCITIES
D'Alembert's Paradox; D'Alembert paradox; Hydrodynamic paradox; D'Alembert Paradox; D'Alemberts Paradox; D'Alemberts' Paradox; Dalembert's Paradox; Hydrodynamical paradox; Hydrodynamics paradox; D'alembert's Paradox
In fluid dynamics, d'Alembert's paradox (or the hydrodynamic paradox) is a contradiction reached in 1752 by French mathematician Jean le Rond d'Alembert.Jean le Rond d'Alembert (1752).
Paradox (literature)         
LITERARY DEVICE; ANOMALOUS JUXTAPOSITION OF INCONGRUOUS IDEAS FOR THE SAKE OF STRIKING EXPOSITION OR UNEXPECTED INSIGHT
Paradox of poetry; Literary paradox
In literature, the paradox is an anomalous juxtaposition of incongruous ideas for the sake of striking exposition or unexpected insight. It functions as a method of literary composition and analysis that involves examining apparently contradictory statements and drawing conclusions either to reconcile them or to explain their presence.
Curry's paradox         
A PARADOX IN WHICH AN ARBITRARY CLAIM F IS PROVED FROM THE MERE EXISTENCE OF A SENTENCE C THAT SAYS OF ITSELF “IF C, THEN F”
Curry's Paradox; Löb's paradox; Loeb's paradox; Lob's paradox; Curry paradox; Löb paradox; Lob paradox; Loeb paradox; Currys paradox; Curry’s paradox
Curry's paradox is a paradox in which an arbitrary claim F is proved from the mere existence of a sentence C that says of itself "If C, then F", requiring only a few apparently innocuous logical deduction rules. Since F is arbitrary, any logic having these rules allows one to prove everything.

Википедия

Attenuation

In physics, attenuation (in some contexts, extinction) is the gradual loss of flux intensity through a medium. For instance, dark glasses attenuate sunlight, lead attenuates X-rays, and water and air attenuate both light and sound at variable attenuation rates.

Hearing protectors help reduce acoustic flux from flowing into the ears. This phenomenon is called acoustic attenuation and is measured in decibels (dBs).

In electrical engineering and telecommunications, attenuation affects the propagation of waves and signals in electrical circuits, in optical fibers, and in air. Electrical attenuators and optical attenuators are commonly manufactured components in this field.