nightlights
Nightlights are small light sources designed to provide low levels of illumination during the night. They are used to enable safe navigation in bedrooms, hallways, bathrooms, and other dark areas, and to reduce fear of the dark or to aid children and elderly individuals who may wake in the night. Nightlights come in various formats, including plug-in devices that fit into ordinary wall sockets, battery-powered units, and solar-powered versions for certain settings. Many modern nightlights use light-emitting diodes (LEDs) or compact fluorescent lamps, offering low power consumption and long service life. Some models include sensors, such as light sensors that turn the light on automatically when ambient light falls, or motion sensors that activate on movement. Color temperature typically ranges from warm white (around 2700–3000 K) to cool white, with warmer tones often preferred for bedrooms to minimize sleep disruption. Brightness generally remains low, on the order of a few lumens, to minimize impact on sleep.
Safety and energy considerations: all-night use stresses energy and can affect sleep quality; many nightlights are
In history: electric night lights emerged in the 20th century as household electricity became common, evolving