For light.
some people use heat lamps to keep their cold blooded pet warm so that they can bask in "the sun"
There are 3 darks lamps that people use as light when they do it HARD
they stopped using candles, kerosene, oil lamps and fire torches in the late 19th century
The primary use for whale oil was for fuel in oil lamps. (This was made obsolete with the invention of electricity and electric lamps.)
People use neon to advertise signs, electron tubes lamps etc
They used oil lamps and lanterns, as well as candles.
they used wapour lamps as used in the army & other services
Kerosene lamps
Candles, Gas lamps and fire torches :)
That one type of salt that people use with lava lamps
Candles. kerosine lamps, gas lamps were popular in cities