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 - a fundamental feeling that is hard to define but that people desire to experience; he was tingling with pleasure. 2. pleasure - something or someone that provides pleasure; a source of happiness; a joy to behold; the pleasure of his company; the new car is a delight.