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I brought a little science with me on my last backcountry canoe trip. After a long day of paddling and portaging, I pulled out a tiny bag of metal salts that I had been packing. The goal: to use the salts to create a dazzling light show over the campfire. The colored flames are generated by burning a small amount of a variety of metal salts in the fire. Different metals burn… Read More

I was at Theatre Junction Grand last weekend for an awards ceremony and noticed some low-hanging light bulbs in the reception area as a design feature. An incandescent light bulb produces β€˜light’ via a filament wire that uses an electric current to heat it to a very high temperature, at which point the filament begins to glow. The filament is connected to contact wires and a base. The bulb itself is filled… Read More