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Edison created the first electric light bulb in 1879. After $40,000 and over 1,000 experiments he succeeded in creating a safe and inexpensive light bulb. The carbonized filament which gets this light bulb working is simply made out of regular cotton thread which has been burned down into ashes. Out of all his experiments he spent the most money and time on this, not to mention it was the most complicated of them all.
Another invention of Edison’s which is still used till this very day, was the first commercial fluoroscope. This machine is known today as the X-Ray machine which take images of the bones inside your body...
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