Franck-Hertz experiment with Mercury:

• Lab Manual pdf, MSWord
  

   Manufacturer information:

• PHYWE FH manual
• Pasco FH manual
• Neva FH manual
• Keithley Picoammeter 6485 Manual
• Keithley Picoammeter brochure
• Low current measurement (Keithley application note)
• Keithley 610 electrometer datasheet
• Keithley 610 electrometer manual

• MIT FH manual
• Michigan Tech. Franck Hertz Manual
• J. Franck and G. Hertz Nobel Lectures 1925 (published by WorldScientific)

Franck-Hertz experiment with Argon:

• lab instructions: MSWord,   pdf
• Manufacturer's Instruction Manual pdf, MSWord
  
• spectroscopic data of Argon   (NIST)