Argon has a lower glow voltage, argon helps the smaller lamps start at a lower voltage. The larger LPS lamps used in street lighting for the most part do not use argon. 2. LPS Development and Inventors: Low pressure sodium lamps were invented first in 1920 by Arthur H. Compton at Westinghouse.
1. the pleasure felt when having a good time. 2. act of receiving pleasure from something. 3. (law) the exercise of the legal right to enjoy the benefits of owning property. Familiarity information: ENJOYMENT used as a noun is uncommon.
1, 2. pleasure, joy, exhilaration, bliss, contentedness, delight, enjoyment, satisfaction. Happiness, bliss, contentment, felicity imply an active or passive state of pleasure or pleasurable satisfaction. Happiness results from the possession or attainment of what one considers good: the happiness of visiting one's family. Bliss is unalloyed happiness or supreme delight: the bliss of perfect companionship.