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  2. Oxford, Cambridge and RSA Examinations - Wikipedia

    en.wikipedia.org/wiki/Oxford,_Cambridge_and_RSA...

    In some of its material, OCR has made mistakes and inaccuracies, sometimes including inaccurate or fictitious content in subject specifications or errors in exam papers. 1998: All the UK schools examinations and vocational qualifications of the UCLES Group were transferred to OCR.

  3. Sixth Term Examination Paper - Wikipedia

    en.wikipedia.org/wiki/Sixth_Term_Examination_Paper

    For the 2019 examinations onwards, the specifications have been updated to reflect the reforms in A Level Mathematics and Further Mathematics; [7] in addition, the number of questions in each paper has been reduced. Specifically: The STEP 1 specification was based on A Level Mathematics, with some additions and modifications.

  4. Stereochemistry - Wikipedia

    en.wikipedia.org/wiki/Stereochemistry

    Stereochemistry, a subdiscipline of chemistry, studies the spatial arrangement of atoms that form the structure of molecules and their manipulation. [1] The study of stereochemistry focuses on the relationships between stereoisomers, which are defined as having the same molecular formula and sequence of bonded atoms (constitution) but differing in the geometric positioning of the atoms in space.

  5. Metamerism - Wikipedia

    en.wikipedia.org/wiki/Metamerism

    Metamerism may refer to: . Metamerism (biology), in zoology and developmental biology, the property of having repeated segments, as in annelids Metamerism (color), in colorimetry, a perceived matching of colors that, based on differences in spectral power distribution, do not actually match

  6. Fraction (chemistry) - Wikipedia

    en.wikipedia.org/wiki/Fraction_(chemistry)

    A fraction in chemistry is a quantity collected from a batch of a substance in a fractionating separation process. In such a process, a mixture is separated into fractions, which have compositions that vary according to a gradient. A fraction can be defined as a group of chemicals that have similar boiling points.

  7. OCR-B - Wikipedia

    en.wikipedia.org/wiki/OCR-B

    OCR-B is a monospace font developed in 1968 by Adrian Frutiger for Monotype by following the European Computer Manufacturer's Association standard. Its function was to facilitate the optical character recognition operations by specific electronic devices, originally for financial and bank-oriented uses.

  8. Recloser - Wikipedia

    en.wikipedia.org/wiki/Recloser

    A sectionalizer is generally not rated to interrupt fault current however it often has a larger Basic Insulation Level, allowing some sectionalizers to be used as a point of isolation. Each sectionalizer detects and counts fault current interruptions by the recloser (or circuit breaker).

  9. Histogram matching - Wikipedia

    en.wikipedia.org/wiki/Histogram_matching

    In image processing, histogram matching or histogram specification is the transformation of an image so that its histogram matches a specified histogram. [1] The well-known histogram equalization method is a special case in which the specified histogram is uniformly distributed .