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Found 2 results

  1. Like the golden Capacitor, the Golden Speaker Cable Searched Speed of Light vs Speed of Electricity in Copper Cables These are Coax discussions, but you can extrapolate to speaker wire Q If I arranged an experiment where light raced electricity what would be the results? Let's say a red laser is fired at the same time a switch is closed that applies 110 volts to a 12 gauge loop of copper wire with a meter at a distance of ten meters. Also, does the speed of the electricity depend on the voltage applied or the resistance of the conductor? For this test let's say the distance is ten meters through air. I'm not looking for an exact answer. An approximation is fine. electricity speed-of-light electric-current speed conductors A1 A standard demonstration is sending an electrical pulse into a cable a few hundred meters long. The incident and reflected pulses can be visualized on an oscilloscope, separated by about a microsecond, strongly dependent upon cable length, allowing one to determine the speed of signal propagation in the cable. – Smartybartfast A2 The speed of electricity is conceptually the speed of the electromagnetic signal in the wire, which is somewhat similar to the concept of the speed of light in a transparent medium. So it is normally lower, but not too much lower than the speed of light in the vacuum. The speed also depends on the cable construction. The cable geometry and the insulation both reduce the speed. Good cables achieve 80% of the speed of light; excellent cables achieve 90%. The speed does not directly depend on the voltage or resistance. However, different frequencies have different attenuation. In your example, the very moment of switching on represents a high frequency front that will be attenuated. While at the input the voltage would increase very fast, at the output it would increase gradually, as if with a delay. It is not really a delay per se, because the initial low level signal would get there almost with the speed of light, but its amplitude would only gradually increase and reach the full voltage with a substantial delay that would depend on the cable and circuit impedance (mostly on the cable inductance). If you use a high speed coaxial cable (like a 3GHz satellite TV cable) instead of a wire, the delay would be much shorter (80-90% of the speed of light to the full voltage). Hope this helps. https://physics.stackexchange.com/questions/358894/speed-of-light-vs-speed-of-electricity https://cdn.shopify.com/s/files/1/0986/4308/files/Cable-Delay-FAQ.pdf What Is The Speed Of Electron In A Current Carrying Conductor? The electron cannot win the race in vacuum, let alone inside a conductor. The electron cannot travel at the same speed as light for the simple reason that it has mass. Light is the fastest thing in the Universe because it’s massless; it carries with it no baggage and exhibits absolutely no inertia that hinders its motion. https://www.scienceabc.com/nature/what-is-the-speed-of-electricity.html
  2. I have some Zu Audio cables that have worn out their welcome... actually just collecting dust. They are from Zu's "Mission" series and were reviewed in "Positive Feedback" issue #55. I had some Zu Omen Defs for a while and picked them up then. 2 - 4 meter speaker cables terminated with spades on one end and locking banana plugs on the other. 1 - 2 meter speaker cable terminated as above. 2 - 1 meter RCA patch cords. Zu retails these at over $1k for the above and no I did not pay that! I would love to get $100 for the bunch + actual shipping Trouble posting pics because of file size, work in progress... Thanks
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