Since the invention of commercial light bulbs in the late 19th century, one bulb has outshone all others. In 2025, it could enter its 124th year of working life. Exactly when the 60-watt bulb was ...

Those with 2700 K are closest to incandescent bulbs; ones with 3000 K are similar to halogen bulbs. Efficiency is the comparison of the amount of light (lumens) produced by a given amount of ...