Thomas Edison purportedly said that he didn’t fail 700 times in trying to make the incandescent light, he succeeded in proving 700 ways not to do it. Now it can be your turn. This fun science kit is designed to excite and engage experimenters of all ages in re-creating the development of the first light bulb. Build your own working Edison bulb using the included safety vacuum chamber and a number of different filament materials, including carbon and tungsten.