> "Wood with very low EMC will absorb ambient high RH very > quickly. It's slower to dry out, and it takes higher temps and airflow to > speed that process (read institutional conditions <g>). I can measure RH > easier than EMC, and RH is good at predicting what will happen in the near > and long term future." > > I gain from this that wood reacts very quickly on the intake and > very slowly on the release. Not so. I've seen it assumed a lot of times, but have never been able to find documentation to that effect from even a minimally authoritative source. Both absorption and release of moisture in wood is proportional to the difference between wood MC and atmospheric RH%. Even so, keeping track of RH% readings is a very good practical method of anticipating what the instruments' reactions will be with the resulting MC levels, which are lagging somewhat behind the RH% changes. Ron N
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