We use cookies to enhance your experience on our website, including to provide targeted advertising and track usage. All content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only. 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. The act of repelling or the condition of being repelled. | Meaning, pronunciation, translations and examples a strong feeling of repugnance, distaste, or dislike: Cruelty fills me with revulsion. Definition of repulsion. ... For example, the mutual repulsion between molecules has the effect of excluding neighbors from a certain amount of space around each molecule. Learn about attraction and repulsion with HST's magnet lesson plan. mutual repulsion. The visual system and coloration are coadapted to provide an efficient signal mechanism. Meaning of repulsion. In either case, coloration is frequently important. Electron pair repulsion is used to predict the geometry of a molecule or a polyatomic ion. Start learning this word. Electrostatic repulsion occurs between two atoms of the same charge. But do you know what static electricity is or why it makes your hair become attracted to the balloon? 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 visual stimulus is subject to encoding and integrating steps as it passes from the eye to the cerebral cortex of the brain. Repulsion is the force that pushes the objects away from each other. Many brightly coloured reef fishes, for example, defend territories or personal spaces. spin pair repulsion definition Sticky Post By On September 28, 2020 Valence Shell Electron Pair Repulsion Theory Electron Domain Definition and VSEPR Theory We also acknowledge previous National Science Foundation support under grant numbers 1246120, 1525057, and 1413739. Example: The force between two electrons (negative charge). Be on the lookout for your Britannica newsletter to get trusted stories delivered right to your inbox. Information and translations of repulsion in the most comprehensive dictionary definitions resource on the web. Electron pair repulsion is a theory that informs a wide variety of scientific disciplines. Read more with HST! Definition of repulsive. 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. the force that acts between bodies … To answer these questions, we have to start with the atom. "When a sol of gelatin, for instance, is added to a gold sol prepared by the reduction of a gold salt in an alkaline medium, it appears that the gold sol is strongly protected against the flocculating action of electrolytes." 3 : a feeling of aversion : … Definition of repulsion noun in Oxford Advanced Learner's Dictionary. the electric or magnetic force by which one object pushes another one away from it Examples from the Corpus repulsion • The exhibition, which includes some 150 images, veers between attraction and repulsion. Coulomb's law was published by French physicist Charles-Augustin de Coulomb in 1785. As they grow larger, they move into the bases of the needles and onto the branch. In still other species the fish pair and share the territory, and there is little sexual dimorphism. See 4 authoritative translations of Repulsion in Spanish with example sentences and audio pronunciations. After the initial identification of the third party, its visual capabilities must be investigated. 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. GPU-Based Parallel Particle Swarm Optimization Methods for Graph Drawing, Mapping the universe's: ancient sound waves, Advanced fuzzy potential field method for mobile robot obstacle avoidance, Neutrosophy-based interpretation of four mechanical worldviews. These changes are particularly common in fishes and cephalopods, which have efficient neural mechanisms of coloration change. 3. the force that tends to separate bodies of like electric charge or magnetic polarity. 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. 3 : arousing aversion or disgust repulsive crimes. 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. Electrostatic attraction is the phenomenon where a negatively charged atom or molecule is attracted to a positively charged atom or molecule. Such phenomena may be of importance in disruptive coloration. The mutual action by which bodies or particles of matter tend to repel each other. Translate Repulsion. What does repulsion mean? You may even know that it's caused by something called static electricity. Coloration frequently releases agonistic (flight or attack) behaviour in territorial animals and intimidates intruders. a sudden and violent change of feeling or response in sentiment, taste, etc. the feeling of being repelled, as by the thought or presence of something; distaste, repugnance, or aversion. The repulsive force acts between bodies of the same charge or same magnetic polarity. Coloration change is another obvious mechanism that can restrict advertisement to times when it is needed for purposes of communication. Physics, engineering, and chemistry use this principle especially often. (See photograph.). 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. As the juveniles age, their feeding habits overlap those of the adult, and spacing is necessary. 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. In analyzing concealing coloration, the actual identification of the third party may have a profound influence on the interpretation of the coloration and behaviour. It may be used to derive Gauss's law. Biology Dictionaries. 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. By signing up for this email, you are agreeing to news, offers, and information from Encyclopaedia Britannica. Red, black, and yellow are common in this context and may represent aposematic colours recognized by many animals. 1 : the action of repulsing : the state of being repulsed. Identification of the third party and the sensory and nervous system components used by it are important in order to understand thoroughly the adaptive nature of deceptive or advertising coloration. Common Terms in Evolutionary Biology and Genetics (trans-arrangement): The condition in which a double heterozygote has received a mutant and a wild-type allele from each parent, e.g., a + / + b (see also coupling). 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. Both male- and female-territorial species are found within the diverse fish family Cichlidae. n. 1. the act of repulsing, or the state of being repulsed. translation and definition "mutual repulsion", Dictionary English-English online. 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