PPT Slide
1. Interactions between matter and energy can be identified, quantified, and reproduced, even though these interactions are not necessarily perfectly specific in the chemical sense.
2. Therefore, an instrument that measures enough interactions between matter and energy with a sufficiently high signal-to-noise ratio collects enough information to become specific in the chemical sense.
3. Combinations of simple sensing devices that can be constructed with high S/N, such as light reflectance and sound-wave propagation, allow enormous amounts of useful information about the interactions between matter and energy to be collected very quickly.