Parabolic microphones appear to use acoustic mirror properties but instead depend on a parabolic dish to reflect sound coming from a specific direction into the microphone placed at the focus.

Parabolic reflectors are not suitable for imaging nearby objects because the light rays are not parallel.

Parabolic trajectory | Parabolic ( 1 ) and Hyperbolic trajectory | hyperbolic ( 3 ) orbits are escape velocity | escape orbits, whereas elliptical and circle | circular orbits ( 2 ) are captive.

Parabolic mirrors are used in most modern reflecting telescopes and in satellite dishes and radar receivers.

The Hadley Mountain Fire Observation Station and Hadley Parabolic Bridge are listed on the National Register of Historic Places.

Parabolic reflectors are used to collect energy from a distant source ( for example sound waves or incoming star light ) and bring it to a common focal point, thus correcting spherical aberration found in simpler spherical reflectors.

Parabolic mirrors are one of many shapes for a burning-glass.

Parabolic reflectors are popular for use in creating optical illusions.

Parabolic reflectors are also a popular alternative for increasing wireless signal strength.

Parabolic antennas are used as high-gain antennas for point-to-point communications, in applications such as microwave relay links that carry telephone and television signals between nearby cities, wireless WAN / LAN links for data communications, satellite communications and spacecraft communication antennas.

Parabolic antennas are distinguished by their shapes:

Parabolic antennas are also classified by the type of feed, that is, how the radio waves are supplied to the antenna:

Parabolic coordinates are a two-dimensional orthogonal coordinate system in which the coordinate lines are confocal parabolas.

Parabolic subgroups P are also characterized, among algebraic subgroups, by the condition that G / P is a complete variety.

Parabolic trajectory are minimum-energy escape trajectories, separating positive-energy hyperbolic trajectories from negative-energy elliptic orbits.

The transmission signal of the up-link, of relatively high power ( 1, 2, or 5 watts for common VSAT equipment ) originating from BUC ,( block up converter ) and the very low power received signal power ( µ-volts ) coming from the antenna ( aerial ) to the LNB receiver unit, in this case are at an angle of 90 ° relative to each other, are both coupled together at the feed-horn focal-point of the Parabolic antenna.

The indicator generally works well in trending markets, but provides " whipsaws " during non-trending, sideways phases ; as such, Wilder recommended establishing the strength and direction of the trend first through the use of things such as the Average Directional Index, and then using the Parabolic SAR to trade that trend.

Parabolic points generally lie in a curve separating elliptical and hyperbolic regions.

* Another reason for using the Cassegrain design is to increase the focal length of the antenna, to improve the field of view Parabolic reflectors used in dish antennas have a large curvature and short focal length, to locate the focal point near the mouth of the dish, to reduce the length of the supports required to hold the feed structure or secondary reflector.

Parabolic microphone used at an American college football game.

* Parabolic SAR Stop and Reverse indicator, used in technical analysis stock analysis

Parabolic reflectors resolve this, allowing incoming parallel rays ( for example, light from a distant star ) to be focused to a small spot ; almost an ideal point.

Parabolic arches were introduced in construction by the Spanish architect Antoni Gaudí, who admired the structural system of Gothic style, but for the buttresses, which he termed “ architectural crutches ”.

A 2. 5 m Parabolic antenna | parabolic Satellite dish | dish antenna for bidirectional satellite Internet access

* Antenna types: Parabolic Antenna for WiFi

On 29 May 1777 Mudge was elected a Fellow of the Royal Society, and in the same year was awarded the Copley medal for his ‘ Directions for making the best Composition for the Metals for reflecting Telescopes ; together with a Description of the Process for Grinding, Polishing, and giving the great Speculum the true Parabolic Curve ,’ which were communicated by the author to the society, and printed in the Philosophical Transactions ( 1777, lxvii.

Parabolic trough concentrators have a simple geometry, but their concentration is about 1 / 3 of the theoretical maximum for the same acceptance angle, that is, for the same overall tolerances for the system.

The Parabolic SAR is calculated almost independently for each trend in the price.

* Module for Parabolic P. D. E.

Parabolic geometries include many of those of interest in research and applications of Cartan connections, such as the following examples:

Parabolic coordinates have found many applications, e. g., the treatment of the Stark effect and the potential theory of the edges.

Parabolic antennas have some of the highest gains, that is they can produce the narrowest beamwidths, of any antenna type.

Parabolic mirrors work well with objects near the center of the image they produce, ( light traveling parallel to the mirror's optical axis ), but towards the edge of that same field of view they suffer from off axis aberrations:

Parabolic reflectors on the back side of the mirror would then direct the sunlight through the acrylic panels to brilliantly illuminate the honorees ' names with sunlight.

Image: Casa Batlló Parabolic Arches. jpg | Casa Batlló Catenary Arches

** Parabolic induction: a method of constructing group representations of a reductive group from representations of its parabolic subgroups.

Parabolic mirrors were described and studied in classical antiquity by the mathematician Diocles in his work On Burning Mirrors.

Parabolic mirrors were also described by the physicist Ibn Sahl in the 10th century, and Ibn al-Haytham discussed concave and convex mirrors in both cylindrical and spherical geometries, carried out a number of experiments with mirrors, and solved the problem of finding the point on a convex mirror at which a ray coming from one point is reflected to another point.

Parabolic trajectories of water in a fountain.

Parabolic shape formed by a liquid surface under rotation.

File: Parabelbåge. png | Parabolic arch

Parabolic mirror showing Foucault shadow patterns made by knife edge inside radius of curvature R ( red X ), at R and outside R.

File: TV antenna. JPG | Parabolic antenna by Himalaya Television Nepal

Parabolic mirrors were also studied by the physicist Ibn Sahl in the 10th century.

* Parabolic Reflector Antennas www. antenna-theory. com