[GNC] [OT] Re: GnuCash 5.9 on macOS 15.2 Dev Beta

[William Prescott]

Electrons move very slowly in copper, about 1 cm/sec. The question is the signal speed in copper, which is about half the speed of light. I got this from a couple searches in DuckDuckGo. Light in fiber is probably closer to the vacuum speed of light.

Will

On 4 Nov 2024, at 10:00, Michael or Penny Novack via gnucash-user <gnucash-user at gnucash.org> wrote:

On 11/4/2024 10:45 AM, Robert Heller wrote:
> The Speed of Light = 299 792 458 m / s
> Nano =0^-9
> 
> 299792458 * 10^-9 =2997924580m = 29.9792458000cm = 11.8028526771in
> 
Excuse me, but that is in a vacuum. Would be slower in some other medium (like that length of fiber). And while electrons can approach the speed of light in a vacuum, they move slower in that copper wire.

For example, the reason a prism bends light is that the speed of light in glass is lower than in air.

Michael D Novack


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