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  2. Low-power electronics - Wikipedia

    en.wikipedia.org/wiki/Low-power_electronics

    It was later reduced to 3.5, 3.3, and 2.5 volts to lower power consumption. For example, the Pentium P5 core voltage decreased from 5V in 1993, to 2.5V in 1997. With lower voltage comes lower overall power consumption, making a system less expensive to run on any existing battery technology and able to function for longer.

  3. Paschen's law - Wikipedia

    en.wikipedia.org/wiki/Paschen's_law

    This is a substantial fraction of the 7.5 μm spacing between the electrodes for minimal arc voltage. If the electron is in an electric field of 43 MV/m, it will be accelerated and acquire 21.5 eV of energy in 0.5 μm of travel in the direction of the field.

  4. Pi - Wikipedia

    en.wikipedia.org/wiki/Pi

    The number π (/ p aɪ /; spelled out as "pi") is a mathematical constant, approximately equal to 3.14159, that is the ratio of a circle's circumference to its diameter.It appears in many formulae across mathematics and physics, and some of these formulae are commonly used for defining π, to avoid relying on the definition of the length of a curve.

  5. Calculator - Wikipedia

    en.wikipedia.org/wiki/Calculator

    Fractions such as 1 ⁄ 3 are displayed as decimal approximations, for example rounded to 0.33333333. Also, some fractions (such as 1 ⁄ 7, which is 0.14285714285714; to 14 significant figures) can be difficult to recognize in decimal form; as a result, many scientific calculators are able to work in vulgar fractions or mixed numbers.

  6. Middle class” feels more confusing than ever. Here’s how you ...

    www.aol.com/finance/middle-class-feels-more...

    Low wages and inflation The federal minimum wage is $7.25 and hasn’t risen since 2009. In the meantime, high wages haven’t fully caught up to post-pandemic inflation.

  7. Faint young Sun paradox - Wikipedia

    en.wikipedia.org/wiki/Faint_young_Sun_paradox

    Specifically, using 1-D models, which represent Earth as a single point (instead of something that varies across 3 dimensions) scientists have determined that at 4.5 Ga, with a 30% dimmer Sun, a minimum partial pressure of 0.1 bar of CO 2 is required to maintain an above-freezing surface temperature; 10 bar of CO 2 has been suggested as a ...

  8. Tantalum diselenide - Wikipedia

    en.wikipedia.org/wiki/Tantalum_diselenide

    The former compound superconductive character depends on the fraction of tellurium (x can vary in the range 0 < x < 2). [14] The superconductive state arises when the fraction of Te ranges within 0.5 < x < 1.3: [14] the optimal configuration is achieved at x = 0.6 [14] and in correspondence of a critical temperature T c = 1.6 K (−271.55 °C ...

  9. Dollar (reactivity) - Wikipedia

    en.wikipedia.org/wiki/Dollar_(reactivity)

    Prompt criticality will result in an extremely rapid power rise, with the resultant destruction of the reactor, unless it is specifically designed to tolerate the condition. A cent is 1 ⁄ 100 of a dollar. In nuclear reactor physics discussions, the symbols are often appended to the end of the numerical value of reactivity, such as 3.48$ or 21 ...