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Sc- Sc
- Scandium is a soft, silvery white metal.
- Scalar
- Any quantity that has only magnitude as opposed to both magnitude and direction.
- Scalar Product
- The scalar or dot product of two vectors is obtained by adding the products of the respective components of the vectors.
- Scale Effect
- Any variation in the nature of the flow and in the force coefficients associated with a change in value of the Reynolds number.
- Scalene Triangle
- A triangle in which no two sides are of equal length.
- Scandium
- A soft, silvery white metal.
- Scattering
- The irregular diffraction and reflection of waves in many directions.
- Schlieren
- An optical technique that detects density gradients occurring in a fluid flow.
- Schmitt Trigger
- A building block in which the input must be taken to about 70% of rail voltage before
the output will change.
- Schneider Index
- A composite weighted index of pulse and blood-pressure response to exercise, utilized as a test of physical efficiency.
- Schottky Diode
- A diode using an aluminium-silicon junction in which carrier storage is negligible, leading to very fast on and off states and thus very fast switching speeds. The foward voltages is 0.3v.
- Schrodinger Equation
- The basic equation of quantum mechanics.
- Schrödinger, Erwin
- Austrian physicist; developed atomic theory of wave mechanics.
- Schuler Pendulum
- A hypothetical pendulum with a period of 84 minutes.
- Schuler Tuning
- Adjusting a system performing the function of a pendulum so that is has a period of 84 minutes.
- Schwarzschild Black Hole
- A nonrotating, spherical black hole that has no electric charge.
- Scientific Notation
- Numbers entered as a number from one to ten multiplied by a power of ten.
- Scientists
- A list of famous scientists and engineers.
- Scintillation Counter
- A scintillation counter consists of a material that emits light when radiation passes through it.
- Score
- Twenty pieces of something.
- Scraper
- A hardened steel hand tool used to scrape surfaces very smooth by removing minute amounts of metal.
- Screw
- A helical projection of uniform section on the internal or external surface of cylinder or cone.
- Screw Thread
- A ridge of constant section which is manufactured so that a helix is developed on the internal or external surface of a cylinder.
- Screwdriver
- A tool that locates on the head of a screw and allows a torque to be applied to turn it.
- Scribe
- A steel rod 8 to 12 inches long and about 3/16 inches in diameter. It has a long, slender, hardened steel point on one or both ends.
- Scruple
- An old unit of weight.
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