While most of us are limited to the visible spectrum, people with a condition called aphakia possess ultraviolet vision. Aphakia is the lack of a lens, due to surgical removal for cataracts or congenital defects.
A railroad lantern and a railroad lamp are two different things. Lanterns were designed to be portable (i.e. carried) and were basically globes surrounded by a metal frame with a fuel source. When you think of a railroad worker swinging a signal, think lantern.
919,892 questions onWikianswers. An electric train or an electric locomotive is a locomotive powered by electricity from an external source. Sources include overhead lines, third rail, or an on-board electricity storage device such as a battery or flywheel system.Electric trains in big cities are called EMU, electric multiple unit trains.lectric Locomotive Types Edit. An electric locomotive can be supplied with power from 1  ~. Rechargeable energy storage systems, as battery or ultracapacitor-powered mining locomotives. 2  A stationary source, such as a third rail or overhead wire.