On Fri, 31 Oct 2025, [email protected] wrote: > On Fri, 31 Oct 2025, David wrote: > >> On Fri, 31 Oct 2025 at 22:09, David <[email protected]> wrote: >> >>> Hi, there's more explanation here: >>> https://en.wikipedia.org/wiki/Drift_velocity >> >> Sorry, I forgot to mention, their example: >> https://en.wikipedia.org/wiki/Drift_velocity#Numerical_example >> >> Similar to Thomas, calculates a drift velocity of 20 micrometers >> per second for 1 ampere in a 2mm copper wire. >> >> But the final sentence on that page is interesting: >> "By comparison, the Fermi flow velocity of these electrons (which, at >> room temperature, can be thought of as their approximate velocity in >> the absence of electric current) is around 1570 km/s." >> > > all that make my head hurt > i program i saw recently about the sun said a proton created near the core > can take millions of years to reach the surface > talk about a traffic jam >
that's photon not proton
