The mutual action by which bodies or particles of matter tend to repel each other. Species in which the male holds a territory are marked by large and colourful males, the females being smaller and camouflaged; in those species in which the female defends the territory the reverse is found. Example: The force between two electrons (negative charge). 2 : the action of repelling : the force with which bodies, particles, or like forces repel one another. 2. a feeling of distaste or aversion. Certain advertising colorations warn a third party of dangerous or inedible qualities of the organism (aposematic colorations), such as spines, poisons, or other defensive weapons, allowing the possessor to avoid a potentially damaging interaction in which the weapon is used. To answer these questions, we have to start with the atom. The visual stimulus is subject to encoding and integrating steps as it passes from the eye to the cerebral cortex of the brain. While Batesian mimicry involves deceptive coloration, resemblance in warning coloration need not provide false information. repulsion force - (physics) the influence that produces a change in a physical quantity; "force equals mass times acceleration" Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc. Want to thank TFD for its existence? Such phenomena may be of importance in disruptive coloration. Many other animals defend territories throughout the year. a sudden and violent change of feeling or response in sentiment, taste, etc. Repulsion Definition from Science & Technology Dictionaries & Glossaries. As discussed above, Batesian mimicry is the imitation of aposematic coloration by benign organisms, which thereby enjoy at least a portion of the protection of the model species. In either case, coloration is frequently important. An animal may need to conceal itself from predators and to advertise its presence to symbionts or to members of its own species for reproductive purposes. Although similar advertising colorations may contribute to the spacing out of territorial animals, dissimilarity in coloration between members of a species may allow closer spacing. the feeling of being repelled, as by the thought or presence of something; distaste, repugnance, or aversion. Printable version and worksheet included. Electrostatic repulsion occurs between two atoms of the same charge. 2 : tending to repel or reject : cold, forbidding. The importance of strong contrast and contour in the attraction of insects to flowers is related to the perceptual qualities of the insect’s compound eye, which shows maximal response to flickering stimuli and may depend upon similar qualities for much form discrimination. By signing up for this email, you are agreeing to news, offers, and information from Encyclopaedia Britannica. Many brightly coloured reef fishes, for example, defend territories or personal spaces. These were call lyophobic colloids. An example of something repulsive is vomit. mutual repulsion. Biology Dictionaries. n. 1. the act of repulsing, or the state of being repulsed. Information and translations of repulsion in the most comprehensive dictionary definitions resource on the web. Coloration frequently releases agonistic (flight or attack) behaviour in territorial animals and intimidates intruders. To conceptually appreciate the origins of the Casimir effect, see figure 1.In a quantum vacuum, electromagnetic fluctuations appear and disappear as intermittent electromagnetic modes that span an infinite range of wavelengths in free space. 3 : arousing aversion or disgust repulsive crimes. Electron Pair Repulsion Definition The principle that electron pairs around a central atom tend to orient themselves as far apart as possible. Definition of repulsive. Read more with HST! ... For example, the mutual repulsion between molecules has the effect of excluding neighbors from a certain amount of space around each molecule. A research team led by Professor Chi-Ming CHE and Dr Jun YANG, from the Research Division for Chemistry and Department of Chemistry at the Faculty of Science … The black-and-yellow coloration of bees and wasps is a typical example. Coloration change is another obvious mechanism that can restrict advertisement to times when it is needed for purposes of communication. (*Who I met in the late 1960's) It had been known for a long time that electrolytes would flocculate many sols; gold sols were a common example. Be on the lookout for your Britannica newsletter to get trusted stories delivered right to your inbox. An extreme dislike of something, or hostility to something. https://www.thefreedictionary.com/repulsive+force. van Klooster*, Translator; John Wiley & Sons: London; 1927; p. 87. a strong feeling of repugnance, distaste, or dislike: Cruelty fills me with revulsion. 1 : the action of repulsing : the state of being repulsed. Electron pair repulsion is a theory that informs a wide variety of scientific disciplines. THESAURUS – Meaning 3: a feature or quality that makes something seem interesting or enjoyable attraction noun [countable, uncountable] a feature or quality that makes people like, want, or feel interested in something The excitement is part of the attraction of the job. Kruyt, Colloids: A textbook; H.S. Another factor appears to be a shift in the third party as the caterpillar ages; young caterpillars are preyed upon by spiders found on the twigs; larger caterpillars, by birds such as titmice (Parus). The colloi… In many of these species the young and subadults, with radically different coloration from the adult, live within the territory of an adult but remain free from attack; after they assume adult coloration, however, they are driven away. The repulsive force acts between bodies of the same charge or same magnetic polarity. For example, the early stages of the green Scotch pine caterpillar (Bupalus piniarius and others) are found at the tips of pine needles, well camouflaged in this position. The flashing coloration displays of a dominant octopus are an excellent example of a visual battle in which the victor may be determined with little or no bodily contact. Many birds that conceal courtship coloration when their feathers are held close to the body present a brilliant display upon erecting their feathers. Many animals change from cryptic to noncryptic colorations as they change from their normal resting coloration to a display coloration during social interactions. They have intricate and obvious lures that are waved near the mouth on a long stalk; prey fishes attracted to the lure are eaten. See 4 authoritative translations of Repulsion in Spanish with example sentences and audio pronunciations. What does repulsion mean? Contrast and movement are amplified by some cells, while other properties, such as shape and intensity, are ignored. This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional. As he explained previously, the gravitational repulsion between matter and antimatter is a prediction of general relativity. In humans, for example, contrast is greatly enhanced at the junction between a red and a blue stripe, producing the optical illusion that the two stripes never meet and are on different planes. In species in which the task of territorial defense is accomplished largely by one sex, strong sexual dimorphism usually exists, the more brightly coloured sex being the one that holds the territory. H.R. Advertisement is likewise subject to the visual capabilities of the third party, or signal receiver. What Is Driving The Universe's Accelerated Expansion? Some predators deceive with advertising coloration. The frogfishes, or shallow-water anglerfishes, are extremely difficult to detect against their background. Repulsion is “a force between two similar or like charges”. It can be an electric current in a conductor or charged particles moving through space, or it can be the motion of an electron in an atomic orbital. Many other animals defend territories throughout the year. First, let’s step back and review the foundations of the field. You may even know that it's caused by something called static electricity. Similar mechanisms are common in many animals, such as Anolis lizards, which have brightly coloured throat fans that are visible only when erected during courtship or threat behaviour. Definition: the principle that electrons pair around a central atom,and they tend to orient themselves as far apart as possible. Example sentences with "mutual repulsion", translation memory. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more. Scientists explain what happens at a strange 'border line' in materials science: Under certain conditions, materials change from well-known behavior to … translation and definition "mutual repulsion", Dictionary English-English online. In analyzing concealing coloration, the actual identification of the third party may have a profound influence on the interpretation of the coloration and behaviour. Coulomb's law was published by French physicist Charles-Augustin de Coulomb in 1785. Many bower birds (Ptilonorhynchidae) have bright courtship colorations, although some males of Amblyornis species do not. Of obvious importance in the evolution of coloration is the third party, which is the actual selective agent involved in the relationship between the organism and its background. In physics, repulsion describes how two magnets with the same charge jump away from each other, kind of like how most of us leap from the table when mom puts down a plate of Brussels sprouts. As the juveniles age, their feeding habits overlap those of the adult, and spacing is necessary. 1 : serving or able to repulse repulsive force. Coulomb's Law Definition in Science Share Flipboard Email Print ... Scientists in the 18th century suspected the force of the attraction or repulsion diminished based on the distance between two objects. (See photograph.). It may be used to derive Gauss's law. repulsion in Physics topic. | Meaning, pronunciation, translations and examples The overwhelming majority, about 70 percent, is made up of dark energy -- a mysterious, Neither the charge distribution around galaxies nor its fraction responsible for the, where [s.sub.j]--coefficient that specifies orbital force direction: for clockwise direction s = 1, otherwise s = -1, [F.sub.orb,0]--orbital force basis magnitude, [w.sub.o,j]--real number that define the orbital and the, While MPS method and ISPH (Incompressible SPH) method (Shao and Lo, 2003), (71) both of which are based on the projection method with semi-implicit algorithm, require artificial, "The researchers' calculations show that if gravitational waves are found to travel at the speed of light, this would rule out alternative gravity theories, with no dark energy, in support of Einstein's Cosmological Constant," the University of Edinburgh said in a statement, referring to the, The discovery was shocking: it means the universe's expansion is actually accelerating, probably driven by some, where [f.sub.att] is the attractive force of the goal and [f.sub.rep] is the, 5 Luo Zhengda (Chinese scholar): the mechanical worldview of natural external force and natural, Dictionary, Encyclopedia and Thesaurus - The Free Dictionary, the webmaster's page for free fun content, World's quickest kettle can boil water in a under a TRILLIONTH of a second; Swedish scientists used a super strong laser machine to turn water into an "exotic state" in the quest to learn more about it, On the Possible Nature of Dark Matter and Dark Energy, NUMERICAL ESTIMATES OF ELECTRODYNAMICS PROCESSES IN THE INDUCTOR SYSTEM WITH AN ATTRACTIVE SCREEN AND A FLAT RECTANGULAR SOLENOID, The Application of Artificial Vector Fields for Motion Control of a Heterogeneous Modular Mobile robot, A Real-Time Obstacle Avoidance Method for Autonomous Vehicles Using an Obstacle-Dependent Gaussian Potential Field, Computational wave dynamics for innovative design of coastal structures. 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