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  2. Circular saw - Wikipedia

    en.wikipedia.org/wiki/Circular_saw

    A hand-held circular saw is the most conventional circular saw. This miter saw is a circular saw mounted to swing to crosscut wood at an angle. A table saw. Tractor-driven circular saw. A circular saw or a buzz saw, is a power-saw using a toothed or abrasive disc or blade to cut different materials using a rotary motion spinning around an arbor.

  3. Quarter sawing - Wikipedia

    en.wikipedia.org/wiki/Quarter_sawing

    Quarter-sawn boards have greater stability of form and size with less cupping (compared to flatsawn boards), shrinkage across the width, shake and splitting, and other good qualities. [1] In some woods such as oak , the wood grain produces a decorative effect which shows a prominent ray fleck, while sapele is likely to produce a ribbon figure .

  4. Sources of electrical energy - Wikipedia

    en.wikipedia.org/wiki/Sources_of_electrical_energy

    The electric field sends the electron to the p-type material, and the hole to the n-type material. If an external current path is provided, electrical energy will be available to do work. The electron flow provides the current, and the cell's electric field creates the voltage. With both current and voltage the silicon cell has power.

  5. Circular mil - Wikipedia

    en.wikipedia.org/wiki/Circular_mil

    1 circular mil is approximately equal to: 0.7854 square mils (1 square mil is about 1.273 circular mils) 7.854 × 10 −7 square inches (1 square inch is about 1.273 million circular mils) 5.067 × 1010 square metres; 5.067 × 104 square millimetres; 506.7 μm 2; 1000 circular mils = 1 MCM or 1 kcmil, and is (approximately) equal to:

  6. Electrical resistivity and conductivity - Wikipedia

    en.wikipedia.org/wiki/Electrical_resistivity_and...

    For example, rubber is a material with large ρ and small σ — because even a very large electric field in rubber makes almost no current flow through it. On the other hand, copper is a material with small ρ and large σ — because even a small electric field pulls a lot of current through it.

  7. Circular motion - Wikipedia

    en.wikipedia.org/wiki/Circular_motion

    Examples of circular motion include: special satellite orbits around the Earth (circular orbits), a ceiling fan's blades rotating around a hub, a stone that is tied to a rope and is being swung in circles, a car turning through a curve in a race track, an electron moving perpendicular to a uniform magnetic field, and a gear turning inside a ...

  8. Orders of magnitude (power) - Wikipedia

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

    1.00 × 10 4 W eco: average power consumption per person in the United States in 2008 (87,216 kWh/year) 1.4 × 10 4 W tech: average power consumption of an electric car on EPA's Highway test schedule [25] [26] 1.45 × 10 4 W astro: power per square metre received from the Sun at Mercury's orbit at perihelion: 1.6–3.2 × 10 4 W

  9. Induction shrink fitting - Wikipedia

    en.wikipedia.org/wiki/Induction_shrink_fitting

    Induction heating is a non contact heating process which uses the principle of electromagnetism induction to produce heat in a work-piece. In this case thermal expansion is used in a mechanical application to fit parts over one another, e.g. a bushing can be fitted over a shaft by making its inner diameter slightly smaller than the diameter of the shaft, then heating it until it fits over the ...