Wipe it with cloth I guess?
Usually a higher voltage will make a light bulb shine brighter; but if the voltage is too high, this can also destroy the light bulb.
We now have better materials for the filament and for the gas in the bulb, making them shine brighter and last longer.
quality of reflector, type of light emission, (filament,gas filled)
change the battery
The Shorter the wire the brighter the bulb ! Because if it is short then it get brighter and the more batterie the brighter the bulb ! Or the lower voltage the brighter the bulb !
you can make it brighter by adding another battery/cell
Depends on the flashlight, some have many bulbs which would probably shine brighter, or just one big bulb which depending on the bulb, might shine less bright.
it explodes
The Natural way to make eyes shine brighter is by 'smiling'. It makes a person instantly beautiful, that's my oppinnon.
Rub it with a peice of clothAnswerJust turn up the shine volume...you didn't know that?
That does not depend directly on the brightness of the bulb, it depends on the current drawn by the bulb (which depends on the efficiency of the bulb). For example an incandescent bulb will draw much more current than a much brighter CFL bulb or LED bulb. Therefor switching to an brighter LED bulb can make the battery last much longer while switching to a brighter incandescent bulb will make the battery run down quicker.
shut up you nerd