Headlamps
At the turn of the 20th Century, the only people who wore lamps on their heads were miners. Those early headlamps burned acetylene gas, until Thomas Edison invented an electric model, in 1914. Miners still wear headlamps today, as do dentists, doctors, electricians, plumbers, and many other professionals. The technology has evolved from gas flame to incandescent bulb to LED, but the principle is the same: you just can’t beat hands-free, portable light.
Of course, headlamps aren’t just for digging coal and drilling teeth. They’re perfect for a