Lamp colour is determined by the Kelvins and a lamp which is 2700 kelvin
is classed as warm white and sympathetic to skin tones and warm brickwork. A kelvin
of 6500k is in the blueish white spectrum and works well against a white background
and will appear brighter to the naked eye than the warm colour spectrum.
All lamps have a lumen number and the higher the lumen number the brighter the lamp,
however colour of the lamp (kelvins ) also comes in to play here as a whiter lamp
at 6,000 kelvins and above would always appear brighter to the naked eye than a warmer
colour lamp at the 2,700 kelvins light spectrum even if it has the same lumen output.
A halogen 150w R7 lamp that is used in a standard garden security flood light would
produce around 2,300 lumen's and a 26w compact fluorescent would produce around 1,800 lumen's. Placing lights closer to the item to be illuminated is a good way of
using a lower lumen lamp rather than trying to flood light a big area.
Care should be taken for local wildlife, insects, and general light pollution,
this means the warmer colour spectrum does not interfere with insects and general
wildlife as much as the blue spectrum of light around 6,000 kelvins which can disrupt
their normal night time activity. This also applies to bats where a anti glare light
fittings works better as well as reducing overall light pollution in the area.
|Lamp description:||quartz halogen bulb R7s 78 mm 100 Watt|
|Max wattage:||100 Watt|
|IP rating:||IP 44|