Sy
- Sylvic Acid
- Another name for Abietic Acid.
- Sylvine
- Naturally occuring potassium chloride.
- Symbolic Logic
- A mathematical form in which propositions and their relationships may be represented symbolically.
- Symmedian
- Reflection of a median of a triangle about the corresponding angle bisector.
- Symmetric Matrix
- A matrix A is symmetric if it equals its transpose.
- Symmetrical Multivibrator
- A circuit that generates square waves.
- Symmetrical Thread
- Both flanks of the thread profile are inclined at the same angle.
- Symmetry
- A figure has symmetry if it has parts that correspond with each other in terms of size, form, and arrangement.
- Symptom Elaboration
- Using built-in indicating instruments or other aids to define equipment malfunction.
- Symptom Recognition
- Recognition of a situation in equipment operation that is not normal.
- Synaesthesia
- A cross talk effect in the brain in which one sensory pathway links across to another, resulting in two outputs from one
input.
- Synchro
- A small motorlike analog device that operates like a variable transformer and is used primarily for the rapid and accurate transmission of data among equipments and stations.
- Synchro Capacitor
- A unit containing three delta-connected capacitors.
- Synchronous
- The transmission of data between a transmitting and receiving device occurs
as a series of zeros and ones.
- Synchronous Averaging
- A type of signal averaging where successive records of the time waveform are averaged together.
- Synchronous Belt Drive
- Also known as a Toothed Belt Drive.
- Synchronous Dynamic Random Access Memory
- SDRAM delivers bursts of data at high speeds using a synchronous interface.
- Synchronous Motor
- An AC motor whose rotor is activated by DC.
- Synchronous Orbit
- An orbit in which the satellite moves or rotates at the same speed as the earth.
- Synchronous Rotation
- The Moon about the same amount of time to rotate on its axis as it does to complete an orbit of the Earth, thus always presenting the same side to Earth.
- Synchronous Speed
- The speed at which the rotating field in an ac motor revolves.
- Synchronous Tuning
- In a klystron amplifier, a method of tuning that tunes all the resonant cavities to the same frequency.
- Synchroscope
- A meter that indicates the relative phase angle between an incoming set voltage and the bus voltage.
- Synchrotron
- A type of circular accelerator in which the particles travel in synchronized
bunches at fixed radius.
- Synchrotron Radiation
- Electromagnetic radiation emitted by a very high-energy electron, moving in a magnetic field.
- Syneresis
- The shrinking of a gel.
- Syngas
- A gas mixture that contains varying amounts of carbon monoxide and hydrogen generated by the gasification of a carbon containing fuel to a gaseous product with a heating value.
- Syntax
- The rules governing the structure of a language.
- Synthesis
- The construction of a compound by the union of elements or simple compounds.
- Synthetic
- A substance manufactured by chemical synthesis.
- System
- A combination of sets, units, assemblies, subassemblies, and parts joined together to form a specific operational function or several functions.
- Systematic Error
- A measurement error in an instrumentation system which is predictable and correctable.
- Systematic Errors
- Cumulative errors that can be compensated for, if the errors are known.