Timeline for How to find the corrsponding expression after working with natural units $\hbar=c=1$?
Current License: CC BY-SA 4.0
10 events
| when toggle format | what | by | license | comment | |
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| Apr 22, 2019 at 14:48 | comment | added | rob♦ | @DanielSank At the risk of overextending the analogy: Some folks (another example) need a dose of naloxone first. | |
| Apr 22, 2019 at 4:54 | comment | added | DanielSank | @rob good to hear. So let's make ourselves peddlers of healthy nutrition and out-compete the drug pushers. | |
| Apr 22, 2019 at 4:11 | comment | added | rob♦ | @DanielSank Actually I mostly agree with you. However I have to cope with colleagues who process the world differently than I do. I've gotten reasonably good at it, and this answer describes how. Think of relativists who write $E^2 = p^2+ m^2$ as peddlers of a gateway drug. | |
| Apr 22, 2019 at 3:51 | comment | added | DanielSank | I do not agree with this answer. Physics equations are not written in any particular system of units. For example, the equation $F = ma$ is true in a platonic sense that the constraint represented by the equation is true in no matter how we choose to quantify the three physical quantities therein. "Setting $c$ to 1" is simply nonsense and what you're really doing is redefining the meaning of the symbol $x$ to be "distance divided by the speed of light", which has dimensions of time and makes no reference to units whatsoever. | |
| Apr 21, 2019 at 22:06 | comment | added | rob♦ | @higgshunter Edited. | |
| Apr 21, 2019 at 22:05 | history | edited | rob♦ | CC BY-SA 4.0 |
added 857 characters in body
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| Apr 21, 2019 at 17:09 | comment | added | higgshunter | Now I'm confused again, I have branching ratio that is ... $\frac{G_F^2m^9\tau}{m^4\hbar} = \frac{G_F^2m^5 \tau}{\hbar} = \frac{[eV/c^2]^5 [s]}{[eV]^5 [s]}= \frac{1}{c^{10}}$ so since the branching ratio has no dimension I need to multiply this by $c^{10}$? $G_F$ is the Fermi constant and $\tau$ the lifetime btw. But that would give me a result that is by far to big. SO what am I missing here? | |
| Apr 20, 2019 at 21:00 | vote | accept | higgshunter | ||
| Apr 20, 2019 at 21:00 | comment | added | higgshunter | The thing with the mass dimension appeals to me. This way can probably get a good intuition for most things. Thanks a lot for that very ood answer. | |
| Apr 20, 2019 at 19:54 | history | answered | rob♦ | CC BY-SA 4.0 |