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  2. Unity of opposites - Wikipedia

    en.wikipedia.org/wiki/Unity_of_opposites

    Anaximander posited that every element had an opposite, or was connected to an opposite (water is cold, fire is hot). Thus, the material world was said to be composed of an infinite, boundless apeiron from which arose the elements (earth, air, fire, water) and pairs of opposites (hot/cold, wet/dry). There was, according to Anaximander, a ...

  3. Presentation slide - Wikipedia

    en.wikipedia.org/wiki/Presentation_slide

    A group of slides is called a slide deck. A slide show is an exposition of a series of slides or images in an electronic device or on a projection screen. Before personal computers, they were 35 mm slides viewed with a slide projector [1] or transparencies viewed with an overhead projector.

  4. List of chemistry mnemonics - Wikipedia

    en.wikipedia.org/wiki/List_of_chemistry_mnemonics

    It is accomplished by loss of one or more electrons. The atom whose oxidation number decreases gains (receives) one or more electrons and is said to be reduced. This relation can be remembered by the following mnemonics. Leo says Ger! or Leo the lion, Ger! can be used to represent Loss of electron is oxidation; Gain of electron is reduction ...

  5. Presentation - Wikipedia

    en.wikipedia.org/wiki/Presentation

    The key elements of a presentation consists of presenter, audience, message, reaction and method to deliver speech for organizational success in an effective manner." [ 3 ] Presentations are widely used in tertiary work settings such as accountants giving a detailed report of a company's financials or an entrepreneur pitching their venture idea ...

  6. Indistinguishable particles - Wikipedia

    en.wikipedia.org/wiki/Indistinguishable_particles

    If M is ⁠ ⁠ where d ≥ 3, then this homotopy class only has one element. If M is ⁠ R 2 {\displaystyle \mathbb {R} ^{2}} ⁠ , then this homotopy class has countably many elements (i.e. a counterclockwise interchange by half a turn, a counterclockwise interchange by one and a half turns, two and a half turns, etc., a clockwise interchange ...

  7. Fallacy of composition - Wikipedia

    en.wikipedia.org/wiki/Fallacy_of_composition

    The fallacy of composition is an informal fallacy that arises when one infers that something is true of the whole from the fact that it is true of some part of the whole. A trivial example might be: "This tire is made of rubber; therefore, the vehicle of which it is a part is also made of rubber."

  8. Glossary of physics - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_physics

    Bosons constitute one of two main classes of particles, the other being fermions. Unlike fermions, there is no limit to the number of bosons that can occupy the same quantum state. Boyle's law A chemical law which states that the volume of a given mass of a gas at constant temperature is inversely proportional to its pressure. Bra–ket notation

  9. Pauling's rules - Wikipedia

    en.wikipedia.org/wiki/Pauling's_rules

    One of Pauling's examples is olivine, M 2 SiO 4, where M is a mixture of Mg 2+ at some sites and Fe 2+ at others. The structure contains distinct SiO 4 tetrahedra which do not share any oxygens (at corners, edges or faces) with each other. The lower-valence Mg 2+ and Fe 2+ cations are surrounded by polyhedra which do share oxygens.