xiv, 270 pages, 4 unnumbered leaves of plates : illustrations ; 25 cm
Série
Butterworths series in conservation and museology The Butterworth series on conservation in the arts, archaeology, and architecture
Notes
CONTENTS -- Light part I: Surface deterioration -- Light and hear energy -- The spectrum -- The basic light sources -- Colours and materials which change -- Damage caused by UV and visible radiation -- UV radiation and how to deal with it -- Measuring UV and visible radiation -- The reciprocity law -- Controlling visible radiation -- Reducing illuminance -- 50 lux -- artificial light -- Diffusion of light -- 150 lux -- daylight and artificial light -- Treatment of windows -- Angle at which light falls on exhibits -- Reducing time of exposure -- A suite of exhibition rooms -- Heat -- Control of temperature -- Lighting for professional photography, television and restoration -- Electronic flash -- Colour rendering -- The measurement of colour -- The lighting situation and the process of seeing -- Humidity part I: The importance of humidity -- Measuring the humidity in the air -- The wet-and-dry-bulb hygrometer -- Understanding the hygrometric chart -- Response of museum material to RH -- Best RH for moisture-containing absorbent materials -- Climate inside and outside the museum -- Condensation and the dew point -- Humidity control -- RH control in a room -- The humidistat -- Humidifying equipment -- Dehumidifying equipment -- Room RH control: maintenance and air circulation -- Packaged air-conditioning units -- Central air conditioning -- RH control in a closed case -- buffers -- RH control in a closed case -- use of salts -- Mechanical RH stabilisation in cases -- Future development of exhibition case stabilisation -- RH is often a matter of compromise -- Buildings which cannot be humidified -- Improvisation and RH control -- Humidity control in archaeology -- Air pollution part I: The problem -- Particulates -- Particulate concentrations today -- New concrete buildings -- Removal of particulates -- Electrostatic precipitators (electro-filters) -- Gaseous pollution -- Sulphur dioxide (SO2) -- Damage caused by sulphur dioxide -- Glass and sulphur dioxide -- Effects of sulphur dioxide on lichens and mosses -- Ozone -- Effects of ozone -- Nitrogen oxides -- Effects of nitrogen dioxide -- Levels of ozone and nitrogen dioxide likely to be encountered -- Chlorides -- Pollution through storage conditions -- Removal of gaseous pollutants -- Fire extinguishers -- Vibration -- Light part II: Spectral curves -- Sun and sky -- Lamps and control equipment -- Measuring UV -- Luminous efficiency and the light meter -- Some basic light units -- Visual performance -- Luminance and subjective brightness -- The Blue Wool standards -- Damage versus wavelength -- Heat radiated from light sources -- Activation energy -- The primary photochemical reaction -- Placing a colour on the CIE chromaticity chart -- The colour rendering calculation -- Colour rendering and the black body convention -- Humidity part II: The standard hygrometric (psychometric) chart -- A simple air-conditioning operation -- The lithium chloride hygrometer -- Dimensional changes caused by RH variation -- Outdoor climate and response of objects indoors -- Does constant RH keep dimensions unchanged at all temperatures? -- Effect of people on RH and temperature -- Moisture content of absorbent materials useful as buffers -- Exchange of air between case and room -- Hygrometric half-time -- Penetration of oxygen and water vapour through plastic films -- Air pollution part II: Plotting the size distribution of particulates -- Choice of particulate filter -- Efficiency of activated carbon filters -- The fate of sulphur dioxide in the atmosphere -- The formation of ozone.
