BASICS OF GALLERY LIGHTING - Museums and Galleries … workshop ppt.pdf · BASICS OF GALLERY...
Transcript of BASICS OF GALLERY LIGHTING - Museums and Galleries … workshop ppt.pdf · BASICS OF GALLERY...
BASICS OF GALLERY LIGHTINGDogwood Crossing @ Miles
15 June 2011
This workshop is a partnershipbetween Museum and GalleryServices Queensland andWestern Downs Regional Council
This workshop has been supported bythe Visual Arts and Craft Strategy, aninitiative of the Australian, state andterritory governments.
What is light?
Light is electromagnetic radiation in thevisible range.
The visible range (at least for humans) isapproximately 400 to 770 nanometres.
Electromagnetic radiation travels at nearly300 million metres per second (the speed oflight) and includes radio waves, infrared,visible light, ultra violet radiation and X-rays(among others).
What is light?
The wavelength is established as speeddivided by frequency.
Frequency is the number of cycles persecond, or hertz.
Light is considered to have both properties ofparticles and waves. The smallest quantum(unit) of light is a photon.
What is light?White light is the combination of all of thecolour of the spectrum:
RedOrangeYellowGreenBlue
IndigoViolet
Colour
Colour is subjective - we can only assumethat we each see the same colours.
People who are colour blind perceive coloursacross a narrower range and cannot alwaysclearly differentiate between colours (most
commonly between red and green).
Colour andcolour temperature
Colour temperature is a comparativemeasurement. A light source’s colour
temperature is the temperature an idealblack-body radiator would reach to match the
hue of the light source.
Measured in degrees Kelvin (the unit ofabsolute temperature), colour temperaturesabout 5,000° K are considered cool colours,while 2,700-3,200° K are considered warm.
Colour andcolour temperature
Daylight on a clear day - over 5,000° K
Tungsten halogen - approximately 3,200° K
Incandescent - approximately 2,700° K
Lux and lumen
Lumen is the measure of the amount of lightemitted per second by a light source.
Lux is a measure of lumen.
1 lux = 1 lumen per square metre.
Lux levels decrease as distance from the lightsource increases.
Luminaires (or ‘lights’ to you and me)
Main types of luminaires:
IncandescentTungsten halogen
DichroicFluorescent tubes
Compact fluorescentsLEDs (Light Emitting Diodes)
Safety and lighting
Electricity poses a great risk.By law the building must be fitted with a
safety switch.Electrical fittings should be regularlyinspected by a qualified electrician.
Staff and volunteers must be trained andfamiliar with the equipment.
PPE (Personal Protective Equipment).Safe work practices.
Safety and lighting
Recommended PPE(Personal Protective Equipment)
Quality rubber-soled shoesFibreglass ladder
GlovesEye protection
Safety and lighting
Safe work practices
Work from ‘behind’ light fittings (avoidingshort-term dazzled effect and long-term eye
damage).Check heat of lamps before handling.
Avoid unnecessary handling.