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Entries starting with S

965 entries.

snozzle

A reinforced firefighting nozzle used to pierce the exterior skin of an aircraft and spray water or firefighting foam inside the aircraft to help extinguish a fire.

sny

Upward curving observed in the planks of a wooden ship or boat.

SOA

Initialism of semiconductor optical amplifier (“a device that amplifies an optical signal directly”)

soffietta

A tool consisting of a metal tube, often swan necked, attached to a conical nozzle. The nozzle is used to block the mouth of a glass vessel so that it can be further inflated by blowing into the tube.

SOFIA

Acronym of Stratospheric Observatory for Infrared Astronomy, a telescope atop a Boeing 747SP aircraft with an effective diameter of 2.5 meters at altitudes up to 13.7 kilometers.

soft error

A type of transient error where a signal or datum is momentarily wrong, caused for example by an ionizing particle striking a chip.

softroader

A unibody crossover SUV or vehicle designed for daily driving, light off-roading, and inclement weather, rather than extreme, technical terrain.

software defined radio

A radio that creates and receives radio signals through software controlled DSPs (digital signal processors) with ADCs (analog-to-digital converters) and DACs (digital-to-analog converters).

solar generator

A battery box, capable of providing power in amounts like a generator. It is not a generator, not generating any electricity from fuel, merely storing power previously charged in the unit. The power stored in the unit does not necessarily need to be provided by solar panels, mains power can also be used to charge the unit, or any other electricity source. Input power may also be streamed directly as output power.

solar power

The conversion of energy from sunlight into electricity, either directly using photovoltaics, indirectly using concentrated solar power, or a combination of the two.

solar sail

A sail-like structure on a spacecraft consisting of very large ultrathin mirrors, with propulsion being achieved by the radiation pressure of light from a star or laser.

solder mask

A thin lacquer-like layer of polymer that is usually applied to the copper traces of a printed circuit board for protection against oxidation and to prevent solder bridges from forming between closely spaced solder pads.

solid model

A type of computer model (of a physical object) that is defined geometrically as consisting of virtual 3D solid shapes rather than as other geometric forms (such as lines and points alone, wireframes, pixels, or voxels).

solid rocket

A rocket engine (rocket motor) that uses a solid propellant that, when combusted, generates gases which are used for rocket propulsion.

solid-state

Of an electronic component, based upon semiconductors, as distinct from older technologies such as vacuum tubes.

solid-state battery

An electrical battery that uses a solid electrolyte to conduct ions between the electrodes, instead of the liquid or gel polymer electrolytes found in conventional batteries.

solion

An electrochemical device of the 1950s, intended to replace the transistor in certain situations, and using ions rather than electrons to carry electrical charge.

sonar

Artificial echolocation by use of electronic equipment, with hydrophones to locate objects underwater, using the same wave-analysis principles that radar uses.

sonic boom

The audible effect of a shock wave in the air, especially one caused by an aircraft flying faster than the speed of sound.

sonotube

A tube of compressed fibre into which wet concrete is poured in order to make columns or pillars

sorbitization

The process of sorbitizing, especially in the hardening of metal by interrupted quenching.

space line

A thin piece of metal used to open the lines of type to a regular distance from each other, and for other purposes; a lead.