Last week, we took a look at fluorescent lighting, which is dramatically reducing our energy use for illuminating indoor spaces. This week, we'll cover mercury vapor lighting, which is the most common ...

If you’re over the age of 25, you probably remember when streetlights had a warm, yellow-orange glow. That was emitted by sodium vapor lamps—the streetlight standard for many years. Recently, as ...

Cooper Hewitt linear mercury vapor lamp, ca. 1925. Characteristics: Double-ended tube with cup-style electrodes on one end, mercury-pool electrode on the other. Clear, tubular envelope with ...

More successful and profitable than attempts to create gold from mercury is the actual creation of electricity at Hartford, Conn. The Hartford Electric Light Co. has been using a mercury-vapor turbine ...