According to BRE’s The essential guide to retail lighting:
A discharge lamp is a ‘Lamp that produces light by discharging an electric current through a gas (neon, argon, krypton) or a gas / metal vapour mixture (mercury, sodium). For some types of discharge lamp, such as fluorescent tubes, the electrical discharge generates ultraviolet radiation, which is converted into visible light by a phosphor coating on the inner face of the glass. The type of coating determines the spectrum of light emitted.’
 Related articles on Designing Buildings Wiki
- Ballast or control gear.
- Colour appearance.
- Daylight benefits in healthcare buildings.
- Daylight factor.
- Daylight lighting systems.
- Dichroic reflector.
- Extra-low voltage lamps.
- General lighting v task lighting.
- Lamp efficacy.
- Light pollution.
- Lighting energy numeric indicator LENI.
- Lighting of construction sites.
- Luminaire efficacy.
- Rights to light.
Featured articles and news
With a new government consultation underway, ICE look at creating a smarter, more flexible energy system.
International Ethics Standards Coalition publishes first set of ethics principles for built environment professionals.
British Antarctic Survey announces research station is to relocate 23km due to growing crack in the ice shelf.
A great example of mimetic architecture with the Fish Building of India.
Could e-bikes be a solution to congested and polluted urban centres?
Government publishes details of £500bn investment pipeline in infrastructure, described as the 'most comprehensive ever'.
Top of new skyscraper trimmed down by 30m to avoid interfering with City Airport flights.
A new concept unveiled to tackle the lack of sports facilities in inner cities.
'Open hand' designs revealed for a new entertainment complex in China.
Modernist architecture and its many international variations explained.
Work set to begin on 'one of America's greatest parks', which will be 10 times bigger than Central Park.
One of our most popular articles - RSHP's Mike Davies writes about the concept design process.