Isomeric meaning in physics

See more words from the same year Dictionary Entries near isomeric isomer isomerase isomere isomeric isomerism isomerize isomerous.

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Keep scrolling for more More Definitions for isomeric isomeric. Please tell us where you read or heard it including the quote, if possible. Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free! It's technical, but it works. We're intent on clearing it up 'Nip it in the butt' or 'Nip it in the bud'? We're gonna stop you right there Literally How to use a word that literally drives some pe Is Singular 'They' a Better Choice?

A selection of words from the chillier parts of t Test your visual vocabulary with our question Login or Register. Save Word. Definition of isomeric. First Known Use of isomericin the meaning defined above.

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isomeric meaning in physics

Learn More about isomeric. Time Traveler for isomeric The first known use of isomeric was in See more words from the same year. Dictionary Entries near isomeric isomer isomerase isomere isomeric isomerism isomerize isomerous See More Nearby Entries.

Statistics for isomeric Look-up Popularity. More Definitions for isomeric. Comments on isomeric What made you want to look up isomeric? Get Word of the Day daily email! Test Your Vocabulary. Test your visual vocabulary with our question challenge! Spell words. Make bears. Love words? Need even more definitions? The awkward case of 'his or her'. Take the quiz Name That Thing Test your visual vocabulary with our question Take the quiz Play the game.The muscular system play an essential role in the body as it produces movement and provides protection and support of various organs.

Different types of activities require muscles to work in different ways while many of these activities require muscles to contract. Muscle cells contain an abundant amount of actin and myosin filaments which are specialised for contraction [1]. Muscle filaments can be broken down into three main types, namely smooth muscles, skeletal muscles and cardiac muscles. Contraction of cardiac muscles and smooth muscles is an involuntary reaction while the contraction of skeletal muscles is voluntary.

Muscle contraction may be classified as isotonic or isometric depending on the arrangement of produced tension [2].

Isomeric Transition

Skeletal muscles are known as contractile organs which consist of many motor units. Each unit consists of muscle fibres connected to a single motor neuron [1]. If there is a force which acts in opposition to the muscles, such as a weight for example, the muscle fibres will stretch thereby resulting in an increase in the tension.

The contraction may not be enough to produce movement, but they do keep the muscle at a resting level of tension or tone [3]. As the name suggests, an isotonic contraction is one in which the muscles will maintain the same tension as it contracts or shortens. During isotonic contractions, a tension or force will develop up to a certain level. After this level, the tension remains constant while the length of the muscle will subsequently change.

These motor units within the skeletal muscles are actually activated thereby allowing for the necessary tension in the muscle to develop [4]. Isotonic contractions are commonly used when moving limbs. Common examples of such activities include walking, running or even lifting objects.

Two main types of proteins found within muscles are responsible for isotonic contractions. These are the actin and myosin proteins. During isotonic contractions, thick strands of myosin and thin strands of actin move over each other. This sliding movement leads to a reduction in size within each individual muscle cell and in the overall entire muscle [4].

These are concentric contractions and eccentric contractions [5]. Concentric contractions occur when muscles shorten while its tension is greater than the force opposing it [2].

Eccentric contractions on the other hand occur when muscles extend in length. The force in eccentric contractions is usually greater than the muscle tension which causes the elongation. The lengthening of muscles during eccentric contractions place a high level of stress on the working muscles and thus the possibility of muscle injury is much higher as when compared to concentric contractions [3].

Examples of a concentric contraction occur when an individual curls their arm. During curling, the muscles will shorten as the arm flexes at the elbow [4]. Extension of the elbow, walking down stairs or sitting on a chair would be a perfect example of an eccentric contraction which aids in controlling the rate of movement.

As the arm is extended, the same muscle will lengthen and maintain the tension.A rough illustration of the phenomenon of isomerism is furnished by written language. One of the most remarkable phenomena of chemistry is that of isomerism.

A general philosophical interest is attached to the phenomena of isomerism. A further distinction is necessary to a survey of the subdivisions of isomerism regarded in its widest sense. Among organisms we sometimes observe a phenomenon which looks very like isomerism. Compare optical isomerismstereoisomerism. Also called nuclear isomerism. ChemistryPhysics. Can you guess what they mean? Words nearby isomerism isomagneticisomaltoseisomerisomeraseisomericisomerismisomerizationisomerizeisomerousisomersisometric.

Example sentences from the Web for isomerism A rough illustration of the phenomenon of isomerism is furnished by written language. The Making of Species Douglas Dewar. The phenomenon of the existence of isomers.

The complex of chemical and physical phenomena characteristic of or attributable to isomers.

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The state or condition of being an isomer. Published by Houghton Mifflin Company. Get Help Now!Definition from Wiktionary, the free dictionary.

The isomer bomb obtained funding, but was canceled as nonsensical. Where the HELL is my monkey? While proponents compare it to the Manhattan Project, opponents point out that independent researchers have not been able to duplicate the results attained by isomer enthusiasts, and that many assumptions behind the bomb contradict the laws of physics. Like Red Mercury, nuclear isomers never grows old.

In January, the first ever isomer bomb was detonated in front of millions of viewers. Of course the bomb in question was fictional, a handy plot device in the new Knight Rider series. It was set to go off if the car dropped to below mph; how original is that as a plot device?

In Russia, there has been plenty of controversy over Hafnium, as well. Tkalya, is deeply skeptical of the physics involved.

The hafnium, or isomer, bomb, is proposed by an expert who needs research funding to prove that the reaction takes place. But we did have a reason to get involved: the proponents of isomer weapons suggested that—although the energy release derived from excited states of nuclei—because the mechanism did not involve either fission or fusion, an isomer bomb would not be a nuclear weapon.

That would mean it could be tested even under the terms of the Comprehensive Test Ban Treaty, and could even be tested in the atmosphere, despite the Limited Test Ban Treaty. According to its proponents, this futuristic weapon would harness the immense energy in subatomic particles known as isomers to deliver kiloton yields in a tiny package. The experimental data analysis shows that development of the hafnium bomb at present is nonreal, because the existing plans of its creation are based on the noncorrectness of obtained experimental data.

Categories : English compound words English lemmas English nouns English countable nouns English multiword terms en:Military en:Weapons English terms with quotations. Namespaces Entry Discussion. Views Read Edit History.Related to isomeric: IsomersallotropicIsomeric transition. Chemistry Any of two or more substances that have the same molecular formula but differ in the way their atoms are connected to each other, in the spatial orientation of their atoms, or, in the case of large molecules such as DNA, in their molecular topology.

Physics Any of two or more nuclei with the same mass number and atomic number that have different radioactive properties and can exist in any of several energy states for a measurable period of time. All rights reserved. Switch to new thesaurus. Based on WordNet 3.

isomeric meaning in physics

Mentioned in? References in periodicals archive? The diazo A and corresponding coupling components B used are all listed in Table-1 and a general synthesis route is depicted in Scheme-1 where the structures C representing the dye molecule and D representing the isomeric form [15, 16].

Comparison of grip strength and isomeric endurance between the right and left hands of men and their relationship with age and other physical parameters.

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These paralogous genes further duplicate to give [alpha]-and [beta]-globin to form isomeric Hbs iso-Hbs. Thus, optional activation normally lessens throughout maximum optional isomeric functions that are a central fatigue evolve and motor unit firing percentages decreases. The number of isomeric forms present in the EOA database ranged from 2 to 6 55 EOAs have 1 other isomer in the database, 10 have 2, 6 have 3, 2 have 4 and 1 has 5.

In the interpretation of the isomeric patterns found in environmental samples, intrinsic characteristics of each compound, such as: solubility, vapor pressure, octanol-water partition, among other parameters must be considered.

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The diastereo isomeric favonolignans that consisted of these chemical components were separated successfully using the high-performance liquid chromatography HPLC method Figure 3. Bistable photochromic compounds capable of reversible transformation between two stable isomeric forms are widely used in the design of materials for molecular electronics, optical data storage, optical switching, molecular logic devices, photopharmacology, biovisualization, and chemoand biosensors []. Dictionary browser?

Full browser?Send us feedback. See more words from the same year From the Editors at Merriam-Webster. Accessed 26 Jan. Keep scrolling for more More Definitions for isometric isometric. Please tell us where you read or heard it including the quote, if possible. Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free! It's technical, but it works. We're intent on clearing it up 'Nip it in the butt' or 'Nip it in the bud'? We're gonna stop you right there Literally How to use a word that literally drives some pe Is Singular 'They' a Better Choice?

A selection of words from the chillier parts of t Test your visual vocabulary with our question Login or Register. Save Word.

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Definition of isometric. Keep scrolling for more. Examples of isometric in a Sentence Recent Examples on the Web Pure Barre consists of small, isometric movements that produce fast results.

First Known Use of isometric circain the meaning defined at sense 1. Learn More about isometric.

Isomeric shift

Time Traveler for isometric The first known use of isometric was circa See more words from the same year. From the Editors at Merriam-Webster.

isomeric meaning in physics

Dictionary Entries near isometric isomerize isomerous isomery isometric isometric drawing isometric line isometric projection See More Nearby Entries. Statistics for isometric Look-up Popularity. More Definitions for isometric. Comments on isometric What made you want to look up isometric?

Get Word of the Day daily email! Test Your Vocabulary. Test your visual vocabulary with our question challenge! Spell words. Make bears.Physics Stack Exchange is a question and answer site for active researchers, academics and students of physics. It only takes a minute to sign up. Nuclear isomers are metastable nuclear statestypically protected from decay by having very different angular momentum from the ground state. Had it been stable the system might have provided an interesting form of atomic information storage that could have been read using isomeric shift and written by suitable handwavy nuclear technology.

This leads to my question: could there be some other very stable nuclear isomer that we have so far overlooked? Or do we have good reason to think that due to studies of isomeric shifts and theoretical models of nuclei that it is unlikely any metastable isomers exist that have been mistaken for ground state isotopes?

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The language of the title doesn't quite make sense. In nuclear physics, an isomer is defined as a state that is not the ground state, and therefore is not stable, but has an unusually long half-life. Only nuclear ground states can be absolutely stable, since their decay can be forbidden by conservation of mass-energy. You also don't need to say "metastable isomers," since an isomer is by definition metastable.

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This is not really typical. It's atypical. This is a special type of isomer called an yrast trap. The yrast line consists of all the points on a plot of E versus J such that the state has the minimum E for a given J.

Normally it is approximately parabolic in shape, as expected for a classical rotor. An yrast trap is a case where the yrast line has the unusual behavior of temporarily dipping rather than continuing to rise.

Most isomers are much less exotic. A common type of isomer occurs in odd and especially odd-odd nuclei, where the density of states near the ground state is large, so that the gamma-ray transition energies are very low. Even in the case of a high-spin isomer, there are actually two different mechanisms that may make the half-life long.

One is that, if it's an yrast trap, we simply need a gamma-ray transition with a high multipolarity. The other is that if the nucleus has a rigid prolate shape, there is an approximately conserved quantum number K, which is the projection of the angular momentum along the symmetry axis. Sometimes an yrast state has a high K, but the states it can decay to have very different values of K. The difference in spin may be small, but the transitions have small matrix elements.

I think the answer is that we can't possibly have observed all such states. There are many, many isotopes that are predicted to exist i. We can't possibly know about isomeric states in these nuclei.