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.
Pleasure is a general term for good feelings. People get pleasure from eating, sleeping, watching TV, or anything else they enjoy. Pleasure is the opposite of pain. Pain feels bad, but pleasure feels good. People talk about sexual pleasure, but that's just one kind. People get pleasure from delicious foods, great movies, beautiful music, and all sorts of other things.