Timeline for What's the difference between a microphone and a barometer?
Current License: CC BY-SA 4.0
15 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Oct 27, 2022 at 18:05 | answer | added | fraxinus | timeline score: 2 | |
| Oct 27, 2022 at 16:32 | comment | added | SK-the-Learner | A barometer measures $p$ while a mic measures $\Delta p$, as pointed by AndreasH. in comments to anna v's answer. A barometer just measures. A mic measures, then converts the sound to electric signals/energy and sends it to the speaker (assuming wired mic). | |
| Oct 27, 2022 at 12:12 | comment | added | uhoh | On Mars there's a lot of overlap between "barometers" and "microphones" in the various spacecraft. Microphone on Mars and What would sounds on Mars be like? and What could Perseverance listening to Ingenuity reveal? | |
| Oct 27, 2022 at 11:52 | answer | added | Andreas H. | timeline score: 3 | |
| Oct 26, 2022 at 21:00 | history | tweeted | twitter.com/StackPhysics/status/1585375740391981057 | ||
| Oct 26, 2022 at 15:25 | comment | added | Vladimir F Героям слава | @Skye Even this expression quite confuses the speed and the pressure. At these scales it is really much easier to think about fluids as continuum. For air, molecular effects appear around the mean free path scale, which is below 100 nm. The pressure is definitely not "the motion of air" even though the velocity and the pressure are of course related through the Navier-Stokes equations. | |
| Oct 26, 2022 at 14:22 | comment | added | Skye | @JiminyCricket. I meant on the molecular level, where gas pressure is caused by collisions of molecules of the gas, which is dependent on the speed | |
| Oct 26, 2022 at 14:05 | answer | added | ghellquist | timeline score: 14 | |
| Oct 26, 2022 at 10:33 | history | became hot network question | |||
| Oct 26, 2022 at 3:40 | answer | added | Jagerber48 | timeline score: 37 | |
| Oct 26, 2022 at 3:28 | answer | added | anna v | timeline score: 28 | |
| Oct 26, 2022 at 3:19 | comment | added | Jiminy Cricket. | "So, a barometer measures the motion of air" - not quite, that would be an anemometer. Barometer measures pressure. | |
| Oct 26, 2022 at 2:50 | answer | added | Duncan Harris | timeline score: 11 | |
| S Oct 26, 2022 at 2:32 | review | First questions | |||
| Oct 26, 2022 at 3:33 | |||||
| S Oct 26, 2022 at 2:32 | history | asked | Skye | CC BY-SA 4.0 |