A mirror image or chrome to the inside of the light as in wrap the philiments on the outsid of them...more wats a lot more change in direction bouncing the light produces more with just 1 light. bounces off road signs and more darkness.
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.
quality of reflector, type of light emission, (filament,gas filled)
We now have better materials for the filament and for the gas in the bulb, making them shine brighter and last longer.
Wipe it with cloth I guess?
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.
A brighter future!
it explodes
The bulb becomes brighter unless it is too much till it shot-circuits.
It is making the place brighter
She's brighter!
it has a giant light bulb that spins around
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 !