It’s hard to compete with the luminous output of a ball of hydrogen and helium gas 864300 miles in diameter, but it should be noted that sunlight is not without its drawbacks.  It’s nearly impossible to use at night, and the quality of light is affected by everything from cloud cover to latitude.  Fire works indoors and at night for light, but it’s not very bright, often rather smoky, and could potentially rage out of control and destroy one’s house.  Incandescent light bulbs use too much electricity and put out a kind of yellow …