'Nils Gustaf Dalen won a Nobel Prize for a lamp that goes on by itself at dusk, 1st used at the Furuholmen one of these'
a lighthouse
LAMPS: Nils Gustaf Dalen won a Nobel Prize for a lamp that goes on by itself at dusk, 1st used at the Furuholmen one of these
Nils Gustaf Dalen won a Nobel Prize for a lamp that goes on by itself at dusk, 1st used at the Furuholmen one of these
Nils Gustaf Dalen won a Nobel Prize for a lamp that goes on by itself at dusk, 1st used at the Furuholmen one of these
LAMPS
a lighthouse
LAMPS