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To compare is to bring two or more things together (physically or in contemplation) and to examine them systematically, identifying similarities and differences among them. Comparison has a different meaning within each framework of study. Any exploration of the similarities or differences of two or more units is a comparison.
Compare and contrast essays are characterized by a basis for comparison, points of comparison, and analogies. It is grouped by the object (chunking) or by point (sequential). The comparison highlights the similarities between two or more similar objects while contrasting highlights the differences between two or more objects.
A contrast is defined as the sum of each group mean multiplied by a coefficient for each group (i.e., a signed number, c j). [10] In equation form, = ¯ + ¯ + + ¯ ¯, where L is the weighted sum of group means, the c j coefficients represent the assigned weights of the means (these must sum to 0 for orthogonal contrasts), and ¯ j represents the group means. [8]
The maximum contrast of an image is termed the contrast ratio or dynamic range. In images where the contrast ratio approaches the maximum possible for the medium, there is a conservation of contrast. In such cases, increasing contrast in certain parts of the image will necessarily result in a decrease in contrast elsewhere.
Contrast is the antonym of simile. In poetic compositions, it is common for poets to set out an elaborate contrast or elaborate simile as the argument. For example, John Donne and the metaphysical poets developed the conceit as a literary device, where an elaborate, implausible, and surprising analogy was demonstrated.
Among numismatists (coin collector-research specialists), cf. may be used in references on the paper and/or online coin identification information meaning "compare to". It is common for abbreviations of listings in trusted coin catalogues or sales from certain online auctions to be cited when identifying a particular coin.
Juxtaposition in literary terms is the showing contrast by concepts placed side by side. An example of juxtaposition are the quotes "Ask not what your country can do for you; ask what you can do for your country", and "Let us never negotiate out of fear, but let us never fear to negotiate", both by John F. Kennedy, who particularly liked juxtaposition as a rhetorical device. [1]
Contrast (vision), the contradiction in form, colour and light between parts of an image; Contrast (statistics), a combination of averages whose coefficients add up to zero, or the difference between two means; Behavioral contrast, a phenomenon studied in psychology (behavior analysis)