Tungsten filaments sealed in a glass bulb are used for what in the dark?
photons energy seeing stay warm sleeping talking communicating heat
A B C D E F G H
Incandescent light bulbs use a tungsten filament sealed inside a glass bulb.
Tungsten filament sealed in a glass bulb is used for seeing in the dark.
Tungsten filaments sealed in a glass bulb are used for what in the dark? (A) photons (B) energy (C) seeing (D) stay warm (E) sleeping (F) talking (G) communicating (H) heat