Question

substance that continue to emit light enen Arted
the sources of light illuminating them is so
withdrew are known as .​

Answer 1

Answer:

flashlight (US) or torch or torchlight (UK) is a portable hand-held electric light. Formerly, the light source typically was a miniature incandescent light bulb but these have been displaced by light-emitting diodes (LEDs) since the mid-2000s. A typical flashlight consists of the light source mounted in a reflector, a transparent cover (sometimes combined with a lens) to protect the light source and reflector, a battery, and a switch, all enclosed in a case.