Hello, Am 14.10.2010 um 13:51 schrieb blacksmith:
Can someone tell me what level of humidity should be kept in my house for care of my hurdy gurdy please?
the gurdy preferes a good medium humidity 50% to 60% but it does not mind slow changes in a range of 30% to 80% of *relative* *humidity* (thats about the same range as for keeping homo sapiens sapiens sane)
This was the answer, here come some more words for thouse who are not familiar with the topic of humidity, but interested (a gurdy player should be interested:-) :
I marked *relative* *humidity* because they are important for the meaning of the percentage numbers: relative humidity is the content of water in aerially form in the air. If the water can be felt as wetness its not humidity, its liquid water which is dangerous for the gurdy (i am not sure about the english terms its humidity as "Luftfeuchtigkeit" vs "Nässe").
Relative humidity is relative because its depending on the temperature (and airpressure). Air can keep a certain amount of water in gaseous condition at a certain temperature, the percentage is telling how much of this potential is used.
Why all the words: any change of temperature changes the relative humidity. This can have very nasty effects if you bring a cold gurdy into a warm room: the water from the warm air may condense on the gurdy into liquid water. Related effect when playing in open air whilst the air is cooling down (in the evening): the air's potential to keep gazeous water is decreasing, the instrument gets wet as the water is falling out. Other way round, if cold air gets warmed up the potential of water that can be kept by the air is increasing, the air gets relatively dryer - this is the basic humidity problem of cold winters: the air in the room gets heated, and therefore relatively dryer. As the air tends to fill its potential for gaseous water it is grabbing the humidity out of anything around, from human to hurdy gurdy.
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