Noble gas as in other metallurgical processes and in the production of silicon for the semiconductor industry. Noble gases are commonly used in lighting because of their lack of chemical reactivity. Argon, mixed with nitrogen, is used as a filler gas for incandescent light bulbs. Krypton is used in high-performance light bulbs, which have higher color temperatures and greater efficiency, because it reduces the rate of evaporation of the filament more than argon; halogen lamps, in particular, use krypton mixed with small amounts of compounds of iodine or bromine. The noble gases glow in distinctive colors when used inside gas-discharge lamps, such
Phase-out of incandescent light bulbs CFLs, and banned the sale and import of them in 2006–07. California will phase out the use of incandescent bulbs by 2018. The bill aims to establish a minimum standard of twenty-five lumens per watt by 2013 and sixty lumens per watt by 2018. In Connecticut legislation was proposed. A bill was introduced in New Jersey in 2007 that calls for the state to eliminate incandescent bulbs in government buildings over the next three years. In Utah energy efficiency standards for government buildings were passed in 1999 that, in practice, require the adoption of energy efficient technology, including LEDs, as