Timeline for Why don't electrons fall or collapse around atom when an object accelerates rapidly?
Current License: CC BY-SA 4.0
12 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Dec 14, 2022 at 8:04 | comment | added | Agnius Vasiliauskas | You don't understand me. The thing that electron has energy doesn't say anything that it can radiate it away or not. It can't in the lowest ground state. Best analogy would be, that while you are driving as fast you can with a car or bicycle around the Earth,- you still can't fall closer to the center of Earth,- even you have potential energy not zero relative to the center (and kinetic energy too),- because you are on the ground. Similarly electron residing in the ground level is 100% stable and can't reduce it's energy anymore. | |
| Dec 14, 2022 at 7:38 | comment | added | Titan | @AgniusVasiliauskas "In lower state electrons can't radiate a bit" if there is no energy in lower state then how would it move in such a speed (2000km/s)? Maybe it's due to attraction force around the nucleus but still it got kinetic energy at such speed, we cant say its cant radiate energy at lower state. | |
| Nov 17, 2022 at 15:06 | vote | accept | Titan | ||
| Nov 17, 2022 at 15:06 | |||||
| Mar 8, 2022 at 17:12 | vote | accept | Titan | ||
| Mar 8, 2022 at 17:12 | |||||
| Mar 8, 2022 at 4:02 | comment | added | tobi_s | @Michael the calculation may be taking too long a detour through classical mechanics to be convincing, but an abbreviation to get the same result is to insert the Coulomb force law into Newton's law $F = ma$, yielding an acceleration of $\approx 10^{22} m/s^2 = 10^{21} g$ for an electron at at the radius of the hydrogen atom. I think a nice way of giving this an intuitive meaning is that the forces inside an atom are so much larger than those in the motions we experience everyday that we can think of chemistry (atomic forces) as something separate from mechanics (everyday forces). | |
| Mar 7, 2022 at 22:01 | history | edited | Peter Mortensen | CC BY-SA 4.0 |
Copy edited (e.g. ref. <https://en.wikipedia.org/wiki/Hydrogen> and <https://ww.youtube.com/watch?v=1Dax90QyXgI&t=17m54s>).
|
| Mar 7, 2022 at 7:38 | comment | added | Agnius Vasiliauskas | @Michael Basically what you are defining here is an Ultraviolet catastrophe with which classical Physics was met long before. Solution is - quantum mechanics. It was noticed that electron emits energy in quanta $E=h\nu$. As electron is in the lowest energy state $n_1$ ground level,- it can't jump to even more lower state (no such state) and as such electron can't radiate even a bit. For example in Hydrogen what electron can radiate most is Lyman series by jumping $n_ {\ge 2} \to n_1$ | |
| Mar 7, 2022 at 3:37 | comment | added | David White | @Michael, the electron is doing something around the nucleus of the atom that it is attached to, but as you say, it is NOT moving around the nucleus in a circular orbit or it would be radiating energy away. | |
| Mar 6, 2022 at 22:47 | comment | added | Michael | But the electron is not actually moving at this speed or with this acceleration, right? Otherwise it would radiate away all its energy... | |
| Mar 6, 2022 at 14:44 | history | edited | Agnius Vasiliauskas | CC BY-SA 4.0 |
comparison to light speed
|
| Mar 6, 2022 at 14:29 | history | edited | Agnius Vasiliauskas | CC BY-SA 4.0 |
added 6 characters in body
|
| Mar 6, 2022 at 14:09 | history | answered | Agnius Vasiliauskas | CC BY-SA 4.0 |