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.
Ear tubes. Overview. Ear tubes (tympanostomy tubes, ventilation tubes, pressure equalization tubes) are tiny, hollow cylinders, usually made of plastic or metal, that are surgically inserted into the eardrum. An ear tube creates an airway that ventilates the middle ear and prevents the accumulation of fluids behind the eardrum. Ear tubes are often recommended for children who have persistent fluid buildup behind the eardrum, especially if the condition causes hearing loss and affects speech development.