Ready References
Signal Conditioning and Data Acquisition Basics
Signal Conditioning and Data Acquisition Overview
AAVSO Observing Programs
Glass Blowing for the Laboratory
Notes on the Materials of Research
Vacuum Thermopiles and the Measurement of Radiant Energy
Radiometric Time Scale
Ready References 
Signal Conditioning and Data Acquisition Basics Signal Conditioning and Data Acquisition Overview 
Glass Blowing for the Laboratory Notes on the Materials of Research 