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  2. Orders of magnitude (charge) - Wikipedia

    en.wikipedia.org/wiki/Orders_of_magnitude_(charge)

    The elementary charge e, i.e. the negative charge on a single electron or the positive charge on a single proton: 10 −18: atto-(aC) ~ 1.8755 × 10 −18 C: Planck charge: 10 −17: 1.473 × 10 −17 C (92 e) – Positive charge on a uranium nucleus (derived: 92 x 1.602 × 10 −19 C) 10 −16: 1.344 × 10 −16 C: Charge on a dust particle in ...

  3. 1/2 + 1/4 + 1/8 + 1/16 + ⋯ - Wikipedia

    en.wikipedia.org/wiki/1/2_%2B_1/4_%2B_1/8_%2B_1/...

    1/2 + 1/4 + 1/8 + 1/16 + ⋯. First six summands drawn as portions of a square. The geometric series on the real line. In mathematics, the infinite series ⁠ 1 2 ⁠ + ⁠ 1 4 ⁠ + ⁠ 1 8 ⁠ + ⁠ 1 16 ⁠ + ··· is an elementary example of a geometric series that converges absolutely. The sum of the series is 1. In summation notation ...

  4. Physical unclonable function - Wikipedia

    en.wikipedia.org/wiki/Physical_unclonable_function

    A physical unclonable function (sometimes also called physi cally -unclonable function, which refers to a weaker security metric than a physi cal unclonable function [citation needed] ), or PUF, is a physical object whose operation cannot be reproduced ("cloned") in physical way (by making another system using the same technology), that for a ...

  5. Char cloth - Wikipedia

    en.wikipedia.org/wiki/Char_cloth

    Char cloth, also called char paper, is a material with low ignition temperature, used as tinder when lighting a fire. It is the main component in a tinderbox . It is a small swatch of fabric made from a natural fibre (such as linen , cotton , jute etc.) that has been converted through pyrolysis .

  6. Surface charge - Wikipedia

    en.wikipedia.org/wiki/Surface_charge

    A surface charge is an electric charge present on a two-dimensional surface. These electric charges are constrained on this 2-D surface, and surface charge density, measured in coulombs per square meter (C•m −2 ), is used to describe the charge distribution on the surface. The electric potential is continuous across a surface charge and the ...

  7. Glossary of British terms not widely used in the United ...

    en.wikipedia.org/wiki/Glossary_of_British_terms...

    a musical note with a duration of one count in a time signature of 4/4 (common time) (US: quarter note; see Note value) cuddly toy soft toy (sometimes used in the US; also stuffed animal, plush toy). Occurs as the title of the Monkees' song "Cuddly Toy", written by Nilsson. cuppa [cup of] tea (never coffee or other beverage) current account

  8. Transform, clipping, and lighting - Wikipedia

    en.wikipedia.org/wiki/Transform,_clipping,_and...

    Overview. Transformation is the task of producing a two-dimensional view of a three-dimensional scene. Clipping means only drawing the parts of the scene that will be present in the picture after rendering is completed. Lighting is the task of altering the colour of the various surfaces of the scene on the basis of lighting information.

  9. Hardware abstraction - Wikipedia

    en.wikipedia.org/wiki/Hardware_abstraction

    A hardware abstraction layer (HAL) is an abstraction layer, implemented in software, between the physical hardware of a computer and the software that runs on that computer. . Its function is to hide differences in hardware from most of the operating system kernel, so that most of the kernel-mode code does not need to be changed to run on systems with different hardwa