Evolution of Energy Contaminant Criteria:
Convergence or Divergence?

Overview
•Energy-Contaminants and their Criteria
–Vibration, Sound or Acoustic Noise, EMI/RFI, ESD, Thermal Variation
•The Interface between instruments and the spaces containing them
•Evolution & devolution
–What is devolution? (in this context)
–Is this new?
–How evolution can lead to devolution
•Examples
•Addressing devolution