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Hmm. Doesn't "solid state" imply "no moving parts"? Their diagram shows a vibrating diaphragm...
by zamfi 4y ago
Hmm. Doesn't "solid state" imply "no moving parts"? Their diagram shows a vibrating diaphragm...
- iancmceachern 4y agoA lot of times it's used to say no parts that move or slide relative to eachother. Things like piezo transducers and DLP mems chips are still considered solid state. Certainly a fuzzy line at best
- marcosdumay 4y agoIt can mean "single part", "no change in points of contact", "non-moving", "not liquid", "no liquids or gases", "no atomic displacement", "ideally no atomic displacement", and several other things. Worse yet, people often change the meaning between sentences of the same document.
- mongol 4y agoSolid state originates in solid state physics, as opposed to physics involving liquids or gases. The MEMS on the device are moving due to solid state physics.
- crazygringo 4y agoBut by that argument a traditional spinning fan is solid state, since the fan is solid rather than gaseous/liquid as well. Same for a spinning hard drive. Common modern usage of "solid state" in electronics seems to be synoymous with "no moving parts", not solid as opposed to liquid/gas. Vibration is kind of an edge case though, so I'm not really sure. There's an expectation that solid state components don't usually fail mechanically or need maintenance in that department. I wonder what the lifetime is for this type of vibrating component?
- mongol 4y agoYes, that's true. Electromagnetics are part of solid state physics. I think there is a tradition to it too, as solid state electronics came to be about semiconductors, and I think still to this day, solid state has that connotation. For that reason I see no problem in calling this a solid state device.
- aqme28 4y agoI'd agree with you. Solid state cooling implies something like a Peltier cooler.
- klaff 4y agoSolid state means it doesn't use vacuum tubes. Well, that's what it used to mean.
- tpmx 4y agoUnderappreciated.
- deleted 4y ago[deleted]