Apprentice Electrician Salary. (United States). An Apprentice Electrician earns an average wage of $13.81 per hour. Skills that are associated with high pay for this job are Controls, Industrial, conduit bending, Electronic Troubleshooting, and Electronic Equipment Installation. Most people with this job move on to other positions after 10 years in this field.
This darkened the bulb and reduced the light output. A halogen bulb contains a halogen element like iodine or bromine instead of inert gas like a conventional bulb. The halogen gas and the filament combine to produce a chemical reaction called the halogen cycle, which redeposits evaporated tungsten on the filament.This increases the bulb's useful life by prolonging the life of the filament, and prevents bulb blackening.alogen bulbs are a variant of the traditional incandescent bulbs that have been used since the early days of the electric light. An incandescent bulb works by applying electrical current to heat a filament in a glass bulb until it glows.
noun, Chemistry. 1. an element that is a dark-reddish, fuming, toxic liquid and a member of the halogen family: obtained from natural brines and ocean water, and used chiefly in the manufacture of gasoline antiknock compounds, pharmaceuticals, and dyes.