Read more with HST! One explanation for the movement is that the older caterpillars are much larger than the background needle, thus rendering the camouflage less effective. An extreme dislike of something, or hostility to something. Many other animals defend territories throughout the year. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more. 3. the force that tends to separate bodies of like electric charge or magnetic polarity. n. 1. the act of repulsing, or the state of being repulsed. First, let’s step back and review the foundations of the field. After the initial identification of the third party, its visual capabilities must be investigated. Magnetism, phenomenon associated with magnetic fields, which arise from the motion of electric charges. 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. 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 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. 1 : the action of repulsing : the state of being repulsed. The colloi… These changes are particularly common in fishes and cephalopods, which have efficient neural mechanisms of coloration change. Many bower birds (Ptilonorhynchidae) have bright courtship colorations, although some males of Amblyornis species do not. Information and translations of repulsion in the most comprehensive dictionary definitions resource on the web. Definition of repulsion noun in Oxford Advanced Learner's Dictionary. a sudden and violent change of feeling or response in sentiment, taste, etc. 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. Printable version and worksheet included. Butterflies of the genus Dardanus, for example, are maximally responsive to their own blue courtship 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). © 2003-2012 Princeton University, Farlex Inc. Want to thank TFD for its existence? Contrast and movement are amplified by some cells, while other properties, such as shape and intensity, are ignored. You probably know what happens if you rub a balloon against your hair. By signing up for this email, you are agreeing to news, offers, and information from Encyclopaedia Britannica. 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. Many other animals defend territories throughout the year. the … 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). 3 : arousing aversion or disgust repulsive crimes. Definition of repulsion. All content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only. Many species of plants have yellow flowers barely distinguishable to the human eye; when an ultraviolet camera is used to photograph such flowers, however, various bright patterns and nectar guides are revealed that appear to be highly species specific (see photograph). 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. Learn more about magnetism in this article. the feeling of being repelled, as by the thought or presence of something; distaste, repugnance, or aversion. The definition of repulsive is disgusting. It may be used to derive Gauss's law. translation and definition "mutual repulsion", Dictionary English-English online. (*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. The territories frequently function to ensure a food supply; because the juveniles utilize different food, they pose no threat to the adult’s supply. Start learning this word. Coloration frequently releases agonistic (flight or attack) behaviour in territorial animals and intimidates intruders. But do you know what static electricity is or why it makes your hair become attracted to the balloon? They have intricate and obvious lures that are waved near the mouth on a long stalk; prey fishes attracted to the lure are eaten. Coloration - Coloration - Repulsion: During the reproductive season, many animals defend a particular area or territory that includes their nest or spawning site. (physics) … Many animals change from cryptic to noncryptic colorations as they change from their normal resting coloration to a display coloration during social interactions. Repulsion is the force that pushes the objects away from each other. Many birds that conceal courtship coloration when their feathers are held close to the body present a brilliant display upon erecting their feathers. Coloration change is another obvious mechanism that can restrict advertisement to times when it is needed for purposes of communication. The act of repelling or the condition of being repelled. What does repulsion mean? The visual system and coloration are coadapted to provide an efficient signal mechanism. Another word for repulsion. Definition of repulsive. Example sentences with "mutual repulsion", translation memory. The spectral sensitivity of its eyes must be determined, as must the way in which it perceives combinations of biochromes and their arrangements. The visual stimulus is subject to encoding and integrating steps as it passes from the eye to the cerebral cortex of the brain. Example: The force between two electrons (negative charge). Müllerian mimicry refers to instances in which several noxious species display the same warning coloration, thus enabling potential predators to learn and generalize the signal easily. Both male- and female-territorial species are found within the diverse fish family Cichlidae. In social signals, the visual system of a species is frequently maximally responsive to its own range of colorations. 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. Such phenomena may be of importance in disruptive coloration. 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. the force that acts between bodies … 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. The two charges of similar nature pull away from each other. repulsion in Physics topic. The repulsive force acts between bodies of the same charge or same magnetic polarity. Magnetism, phenomenon associated with magnetic fields, which arise from the motion of charges! An efficient signal mechanism repulsion between molecules has the effect of excluding neighbors from a certain amount of space each... 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