Definition of aspect for Students. 1  1 : the appearance of something : look The old house took on a dark and lonely aspect at night. 2  2 : a certain way in which something appears or may be thought of We considered every aspect of the question. 3  3 : a position facing a certain direction The house has a southern aspect.
Knob and tube wiring is the original wiring method used from the late 1800s until approximately 1945. It is a system that involved stringing individual conductor insulated wire across porcelain insulators called âknobs,â and through other porcelain insulators called âtubes.â.
1 of 5. Glossary. 1  ampere Unit of current, eg the current in the bulb is 4 amps or amperes (A). 2  circuit A closed loop through which charge moves-from an energy source, through a series of components, and back into the energy source. of 5. Glossary. 1  ampere Unit of current, eg the current in the bulb is 4 amps or amperes (A). 2  circuit A closed loop through which charge moves-from an energy source, through a series of components, and back into the energy source.