- #1
frederick_the
- 1
- 0
hi, for my as level physics coursework i need to write a plan about investigating the expansion and contraction of wood in relation to temperature.
I think i'll use a constantan alloy strain gauge to measure the strain of the wood since i do not intend to measure a temperature range more extreme than -20 to +70 degrees centigrade, so the varying temperature should not affect the strain gauge too much. (right??) But I've been trying to research what would be the best way to heat the wood. Obviously i don't want to heat the connecting wires too much. Also I'm not sure whether i should be using a wheatstone bridge or not. I've read about it, and to be honest i don't understand.
any help much appreciated!
laura xxxxxxxxxxxxxxxxx
I think i'll use a constantan alloy strain gauge to measure the strain of the wood since i do not intend to measure a temperature range more extreme than -20 to +70 degrees centigrade, so the varying temperature should not affect the strain gauge too much. (right??) But I've been trying to research what would be the best way to heat the wood. Obviously i don't want to heat the connecting wires too much. Also I'm not sure whether i should be using a wheatstone bridge or not. I've read about it, and to be honest i don't understand.
any help much appreciated!
laura xxxxxxxxxxxxxxxxx