Easter may have come early for about 150 area kids Thursday, but it wasn’t without its challenge. The egg hunt held at Naperville’s Knoch Knolls Park had to be navigated with the aid of a flashlight. ...
We decided to use a light bulb as the basis for our underwater flashlight. The concept of the light bulb is quite simple. An electric current flows through the filament from the source. The filament ...
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