Physical constants sometimes change!

[carmignani]

I noticed that the official value of some important physical constants stored in the file PhysConstant.m has been changed in the last years.
For example, the elementary charge is now 1.6021766208(98)e−19 C according to wikipedia and apparently it will become exactly 1.602 176 634e−19 C soon, but in our PhysConstant.m file the elementary charge value is only 1.602 176 487e-19 C!
I thought that we could just download the updated PhysConstant.m file, but then I noticed that the file is produced in Soleil and it does not come from NIST.
Should we modify the file?

[lnadolski]

Hi Nicolas

The file is coming from https://fr.mathworks.com/matlabcentral/fileexchange/24236-fundamental-physical-constants.
We just modified it to make it as a class.
We did no spend time to update it from the latest values from NIST.
Feel free to modify even if this will not change the results for our simulations.

Laurent.

[lnadolski]

@carmignani
can I close this issue?

[carmignani]

Hello @lnadolski,
I never updated the physical constants file, but it is really not a problem for our simulations, because the error is in the 10^-7 range. So we can close the issue.