4 ms·
Other two reversible effects that are not cited in the thread: 1. Peltier effect. 2. Piezoelectric effect. The second one is especially useful in DYI stuff si
by antirez 2y ago
Other two reversible effects that are not cited in the thread:
1. Peltier effect.
2. Piezoelectric effect.
The second one is especially useful in DYI stuff since you can use a piezo speaker in order to generate a current when mechanically stressed.
- anfractuosity 2y agoHave you come across https://en.wikipedia.org/wiki/Quartz_crystal_microbalance https://en.wikipedia.org/wiki/Quartz_crystal_microbalance re. the piezoelectric effect, you can apparently measure very small masses. (It sounds like you do need to apply an alternating current for this though)
- antirez 2y agoCool. Yep, piezos only produce current while the mechanical stress changes its shape, but if the load is stable, no current is performed, so I guess that's the reason why you need to apply an alternating current to it in order to use it that way. Thanks.