Entries starting with E

148 entries.

exasecond

An SI unit of time equal to 10¹⁸ seconds. Symbol: Es. (= 31 709 800 000 years, which is more time than has elapsed in the Universe, that is, since the Big Bang [about 13 800 000 000 years].)

exhaust system

The subsystem of an engine that takes the products of the combustion chamber through a catalytic converter and silencer to the final pipe that releases the gases to the air.

exit code

A sequence of digits that must be dialled before the target number when placing an international call from a given country.

expansion joint

A structural separation between two building elements that allows free movement between the elements without damage to the system.

explicit modeling

A type of digital modeling that defines surfaces, edges, nodes, and points either via solid models or via wireframe models.

extension cord

An electrical cord with a plug one end, and a single socket or a multi-port socket at the other end, used for powering one or more devices at a distance, too far from the wall outlet to be reached by the normal cords of the device or devices.

eye pattern

An oscilloscope display of a data signal passed through a transmission line, clocked synchronously to the data symbols; used to analyze the quality of transmission.

eyebar

A straight bar, usually of metal, with a hole or "eye" at each end to allow it to be fixed to other components.

eyebrow

A dormer, usually of small size, whose roof line over the upright face is typically an arched curve, turning into a reverse curve to meet the horizontal line at either end.

eyelash yarn

A type of novelty yarn consisting of a thread base, with several long strands spaced at even intervals that jut out at an angle from the main strand.