Timeline for Why is the mass of a Hydrogen atom lower than the sum of masses its parts?
Current License: CC BY-SA 4.0
15 events
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| Aug 10, 2020 at 11:24 | vote | accept | Chandrahas | ||
| Aug 10, 2020 at 10:38 | history | edited | Peter - Reinstate Monica | CC BY-SA 4.0 |
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| Aug 9, 2020 at 21:52 | history | edited | Peter - Reinstate Monica | CC BY-SA 4.0 |
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| Aug 9, 2020 at 19:56 | comment | added | Peter - Reinstate Monica | @Chandrahas I addressed your question in the answer itself, and in a footnote. Of course a photon has mass in free space as well -- it just doesn't have rest mass. Alas, it is never at rest ;-). | |
| Aug 9, 2020 at 19:54 | history | edited | Peter - Reinstate Monica | CC BY-SA 4.0 |
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| Aug 9, 2020 at 19:41 | comment | added | Chandrahas | That makes sense, but I still have 2 questions: (a) If the combination was done in space without a box, wouldn't the photon have no mass? (b) Why does a photon have mass when contained in the box but no mass when in free space? | |
| Aug 9, 2020 at 19:41 | comment | added | Urb | Yes @Peter-ReinstateMonica, the quote is actually in the paper itself, but it is preferred when citing an article to link to abstract pages rather than the PDF directly. A potential viewer of your answer can then decide to open the PDF simply by clicking the Article PDF link in the abstract page. This is better for the reasons discussed in this meta post. | |
| Aug 9, 2020 at 19:37 | comment | added | Peter - Reinstate Monica | @Chandrahas The abstract answer is "because it emitted a photon", which is energy/mass. | |
| Aug 9, 2020 at 19:32 | comment | added | Chandrahas | But I still son't see how the "inertia" of the recombined atom is lower. I guess I am missing something? | |
| Aug 9, 2020 at 19:20 | comment | added | Peter - Reinstate Monica | @Urb Why the edit? The original link to the PDF actually contained the quote while the abstract does not. | |
| S Aug 9, 2020 at 17:52 | history | suggested | Urb | CC BY-SA 4.0 |
Changed pdf link to abstract page.
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| Aug 9, 2020 at 15:45 | review | Suggested edits | |||
| S Aug 9, 2020 at 17:52 | |||||
| Aug 9, 2020 at 13:49 | history | edited | Peter - Reinstate Monica | CC BY-SA 4.0 |
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| Aug 9, 2020 at 13:43 | history | edited | Peter - Reinstate Monica | CC BY-SA 4.0 |
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| Aug 9, 2020 at 13:23 | history | answered | Peter - Reinstate Monica | CC BY-SA 4.0 |