- Aug 11, 2003
I'm guessing a Coleman lantern using car gas
2.5 pints of gas = 0.3125 gallon * 33,000Wh/gallon = 10,312.5 Wh / 5 hours = 2062.5W / 800 lm = 2.578 W/lumen
If you line a jar with tin foil you can just capture the sunlight during the day & open it at night to let the light out.
Just make sure you have the shiny side facing inwards. If you use a really big jar It'll shine longer.
And since cats are a-holes they would deliberately lead you to crash into stuff and trip over things...