## Elongation Definition

It is said to be in quadrature when it lies at a right angle to a line between the Earth and Sun with an elongation of 90°, and it is in opposition when it lies on the opposite side of Earth from the Sun with an elongation of 180°. Superior planets have a full range of elongations between 0° and 180°. Inferior planets have limited elongations due to their smaller orbits; Venus has a greatest elongation of about 48°, while Mercury’s greatest elongation is about 28°. Elongation at Break measures how much bending and shaping a material can withstand without breaking. The measured elongation at break values is an indication of the ductility of a polymer. Elongation of a pipe is the increase in its diameter when stressed under tension. Flexible pipe materials such as high density polyethylene and polyvinyl chloride can elongate when the embedment soil along the pipeline is compacted.

Elongation at break is important in components that absorb energy by plastic deformation. Instead of being stated in a percentage , tensile strength is measured in units of pounds per square inch . These values are approximate, because the planets do not have perfectly circular, coplanar orbits. When a planet is closer to the Sun it moves faster than when it is further away, so exact determination of the date and time of greatest elongation requires a much more complicated analysis of orbital mechanics. All of these factors can cause a change in pipe diameter resulting in elongation along the vertical or horizontal axis. Avantor®, a Fortune 500 company, is a leading global provider of mission-critical products and services to customers in the biopharma, healthcare, education & government, and advanced technologies & applied materials industries.

## Elongation definition

When it lies on the opposite side of Earth from the Sun with an elongation of 180°. The angular distance in degrees of a planet or the moon from the sun, as viewed from the earth.

### Why flexural test is done?

The flexural test measures the force required to bend a beam under three point loading conditions. The data is often used to select materials for parts that will support loads without flexing. Flexural modulus is used as an indication of a material's stiffness when flexed.

That ferritic grades specify a maximum of the alloy elements copper and manganese, both of which promote the formation of pearlite when the casting is cooling. However, the grades with pearlite commonly have a specification with a minimum of copper.

## Elongation at Break Values of Several Plastics

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As seen by an observer on the superior planet at opposition, the Earth appears at conjunction with the Sun. Technically, the point of opposition can be different from the time and point of maximum Elongation. Opposition is defined as the moment when the apparent ecliptic longitude of any such object versus the Sun differs by 180°; it thus ignores how much the object differs from the plane of the Earth’s orbit.

## The first known use of elongation was

In the case of the moons of Uranus, studies often deal with greatest northern elongation and greatest southern elongation instead, due to the very high inclination of Uranus’ axis of rotation. Greatest elongations of a planet happen periodically, with a greatest eastern elongation followed by a greatest western elongation, and vice versa.

High-throughput techniques enable advances in the roles of DNA and RNA secondary structures in transcriptional and post-transcriptional gene regulation. HSF1 phosphorylation establishes https://accounting-services.net/ an active chromatin state via the TRRAP-TIP60 complex and promotes tumorigenesis. Rigid plastics, especially fiber reinforced ones, often exhibit values under 5%.

## Dictionary Entries Near elongation

Britannica is the ultimate student resource for key school subjects like history, government, literature, and more. The ratio of the extension of a material to the length of the material prior to stretching. The angular separation of a planet from the sun or of a satellite from a planet, as seen by an observer. The amount of extension of an object under stress, usually expressed as a percentage of the original length.

### Scientists discover novel cellular mechanisms behind transcription elongation – Phys.org

Scientists discover novel cellular mechanisms behind transcription elongation.

Posted: Thu, 11 Aug 2022 15:32:14 GMT [source]

The changes in density of engaged Pol II, and the relative Pol II elongation rates, are indicated on the y-axis and the green shading. Pol II is slowest at the promoter-proximal pause site, and speeds up after release from the pause site over a region of approximately 15kb.

The period depends on the relative angular velocity of Earth and the planet, as seen from the Sun. The time it takes to complete this period is the synodic period of the planet. This diagram shows various possible elongations (ε), each of which is the angular distance between a planet and the Sun from Earth’s perspective. Plastic sheeting, regardless of gauge, or similar products do not satisfy this requirement.

Since asteroids travel in an orbit not much larger than the Earth’s, their magnitude can vary greatly depending on elongation. More than a dozen objects in the asteroid belt can be seen with 10×50 binoculars at an average opposition, but of these only Ceres and Vesta are always above the binocular limit of +9.5 when the objects at their worst points in their orbital opposition . Thus Venus’s synodic period, which gives the time between every two eastern greatest elongations, is 584 days; this also applies to the western counterparts. Look up elongation, elongate, or elongated in Wiktionary, the free dictionary. Brachytherapy source means a radioactive source or a manufacturer-assembled source train or a combination of these sources that is designed to deliver a therapeutic dose within a distance of a few centimeters.

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