First Photograph Display Case
About the Project
![]() The interior of the First Photograph case encompasses a volume of approximately 22 liters - external dimensions are 440 mm (width) by 411 mm (height) by 129 mm (depth). Laboratory measurements prior to installation established an oxygen leak rate of only 3 to 5 parts per million (ppm) per day. After placement of relative humidity buffer, activated charcoal, oxygen absorber, and the First Photograph (in its original wooden frame) inside the case, its internal space was filled with humidified (40% RH) argon gas. The First Photograph, housed in its oxygen-free display case, was returned to exhibition on September 3, 2004. The performance of the display case is measured by the use of oxygen, pressure, relative humidity, and temperature sensors connected to a central datalogger. These parameters are recorded hourly and transmitted via network modem to the Environmental Studies Laboratory at the GCI for processing and web posting. Datalogger: Sensors: Telecommunications: |