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| Electroboom: How Right IS Veritasium?! Don't Electrons Push Each Other?? |
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| SiliconWizard:
--- Quote from: Nominal Animal on July 14, 2022, 01:12:11 am --- --- Quote from: electrodacus on July 14, 2022, 01:06:53 am ---The vehicle speed = wind speed is just the ideal case with no friction and can not be demonstrated in real life for any wind powered only vehicle. To me all is very simple as I work with energy all the time. --- End quote --- Don't be surprised, then, when the results you get differ from the real world. A lot of "laws" in physics only apply to equilibrium conditions. For an example, go compare non-equilibrium thermodynamics to (normal, equilibrium) thermodynamics. If you used your approach to investigate sailing, you'd conclude that it is impossible to tack upwind, or jig downwind faster than wind speed. --- End quote --- What if you cut a double slit right in the middle of the sail, though? |
| Nominal Animal:
--- Quote from: SiliconWizard on July 14, 2022, 01:27:21 am --- --- Quote from: Nominal Animal on July 14, 2022, 01:12:11 am --- --- Quote from: electrodacus on July 14, 2022, 01:06:53 am ---The vehicle speed = wind speed is just the ideal case with no friction and can not be demonstrated in real life for any wind powered only vehicle. To me all is very simple as I work with energy all the time. --- End quote --- Don't be surprised, then, when the results you get differ from the real world. A lot of "laws" in physics only apply to equilibrium conditions. For an example, go compare non-equilibrium thermodynamics to (normal, equilibrium) thermodynamics. If you used your approach to investigate sailing, you'd conclude that it is impossible to tack upwind, or jig downwind faster than wind speed. --- End quote --- What if you cut a double slit right in the middle of the sail, though? --- End quote --- Is there a box and a cat involved? If not, you'd just ruin a nice sail, methinks. |
| Naej:
--- Quote from: electrodacus on July 14, 2022, 01:20:56 am --- --- Quote from: Naej on July 14, 2022, 12:57:30 am ---Yes the rate of acceleration slows down. Not the speed. --- End quote --- So what happens when the acceleration rate is zero ? Real vehicle will start to decelerate due to friction losses. --- End quote --- Yeah one day there won't be wind. --- Quote from: electrodacus on July 14, 2022, 01:20:56 am --- --- Quote from: Naej on July 14, 2022, 12:57:30 am ---As I said what you call your equation is true, however it is in the car reference frame. And in the car reference frame, ground has kinetic energy, which is obvious but you refuse to admit it. I can make the following prediction: if you build the blackbird, or the treadmill model (without supercapacitors) you'll be able to go faster than the wind/treadmill. Also, all physicists who looked at it understand this. All you have is your wrong conceptions about a very abstract concept called energy, which presumably come from looking at batteries. It's hardly convincing. --- End quote --- Reference frames do not change the results or conclusions if you are careful when you look from a different reference frame. If you consider the vehicle stationary and earth moving then yes now the vehicle will have zero kinetic energy and the earth will have the vehicle kinetic energy as they were swapped. --- End quote --- Wrong. The earth will have 1/2*m*v² where v is vehicle speed. As m is much, much larger than the car mass, the earth will have a huuuuuge kinetic energy. You applied again the conservation of energy, when it absolutely does not apply. --- Quote from: electrodacus on July 14, 2022, 01:20:56 am ---That is not a prediction. --- End quote --- It is. --- Quote from: electrodacus on July 14, 2022, 01:20:56 am ---There are multiple things that you do not understand. - conservation of energy (first law of thermodynamics) thus you claim 300% efficiency is not a problem. - Newton's 3'rd law of motion --- End quote --- No I simply didn't know that what you called "efficiency" can only be called COP. In any case, what matters is that you can reach a COP larger than 1. --- Quote from: electrodacus on July 14, 2022, 01:20:56 am ---This are absolutely essential else I have no chance to convince you that you are wrong. Even if I demonstrate that blackbird slows down below wind speed after stored energy is used up you will find excuses as in your world energy conservation is not real. --- End quote --- In my world, energy conservation is real, however it's based on serious physics so it has nothing to do with what you call "conservation of energy". Anyway, you yet again showed that you can't even properly handle a different reference frame. Clearly you know exactly nothing in mechanics so just stop talking about mechanics. |
| m k:
--- Quote from: Nominal Animal on July 14, 2022, 03:11:20 am --- --- Quote from: SiliconWizard on July 14, 2022, 01:27:21 am --- --- Quote from: Nominal Animal on July 14, 2022, 01:12:11 am --- --- Quote from: electrodacus on July 14, 2022, 01:06:53 am ---The vehicle speed = wind speed is just the ideal case with no friction and can not be demonstrated in real life for any wind powered only vehicle. To me all is very simple as I work with energy all the time. --- End quote --- Don't be surprised, then, when the results you get differ from the real world. A lot of "laws" in physics only apply to equilibrium conditions. For an example, go compare non-equilibrium thermodynamics to (normal, equilibrium) thermodynamics. If you used your approach to investigate sailing, you'd conclude that it is impossible to tack upwind, or jig downwind faster than wind speed. --- End quote --- What if you cut a double slit right in the middle of the sail, though? --- End quote --- Is there a box and a cat involved? If not, you'd just ruin a nice sail, methinks. --- End quote --- Don't forget that wind blows to all possible directions taking all possible routes. |
| TimFox:
The wind bloweth where it listeth, and thou hearest the sound thereof, but canst not tell whence it cometh, and whither it goeth. John 3:8. |
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