What is helpful for seeing in the dark?
an electron microscope an electron lens microscope closing the blinds blackouts closing your eyes focusing a lens heating a filament
A B C D E F G H
Conventional light bulbs generate light by heating a filament.
Heating a filament is helpful for seeing in the dark.
What is helpful for seeing in the dark? (A) an electron microscope (B) an electron lens (C) microscope (D) closing the blinds (E) blackouts (F) closing your eyes (G) focusing a lens (H) heating a filament