Brass frame, carrying carbon plates 3" wide. Coils on top, not enclosed. Marked: "Wallace's patent December 18, 1877." Also, "92" stamped and etched on lamp. Carbon arc with 2 carbon plates. Regulator ...

Over the next 50 years (1810s-1860s), inventors worked to develop arc lamps with electromechanical regulators that maintained the exact gap needed between the carbons to create the bright light.

The disco backlash of the late 1970s kept the disco ball from spinning. | Blank Archives/Getty Images Disco’s demise was due in part to a trend that had expired but was hastened in some part by ...

Pavel Yablochkov’s early electric candle – an electric carbon arc lamp – was a hit at the 1878 expo when he put up 64 of them in Paris. Roquefort cheese was promoted at these expos and was marketed at ...

This article was written by Martha Hayden and originally appeared on The Restless Viking website on August 27, 2024. Did you ...

Amazon Prime Day is a summer sale that was first introduced in 2015. At its start, Prime Day was a single-day event meant to ...

Fourth of July sales are often centered around grilling and outdoor upgrades, but Amazon’s Outlet is also packed with deals on plush sheets and comforters to refresh your bedroom. With quality brands ...

This product is priced at 10% less than a brand new model.Brand new price is £129Returned product price is £116.10Saving of £12.90This is a returned item. It has previously been ordered, dispatched, ...