General > General Technical Chat
Electroboom: How Right IS Veritasium?! Don't Electrons Push Each Other??
electrodacus:
--- Quote from: gnuarm on July 11, 2022, 04:43:42 pm ---Any yet, they do, as proven by the multiple videos.
You have entered another realm of denial. I'm not going to continue to listen to your BS. I'm convinced that no one who claims to understand physics would not understand this simple model. So you must be trolling.
--- End quote ---
Zig zag is not direct down wind.
gnuarm:
--- Quote from: dunkemhigh on July 11, 2022, 10:51:39 am ---
--- Quote from: gnuarm ---I'm not sure, but I think ED is playing dumb so he doesn't have to deal with the reality of this car which clearly can move down wind faster than the wind. He will insist on changing the case and turn it into something where he can obfuscate and confuse the facts.
--- End quote ---
Exactly that. It would be the prefect definition of trolling technique were it not that he believes what he's posting.
--- End quote ---
No, no one is so stupid as to believe the "average" speed of the sails are what is important when the sails are furled when moving in one direction, and open to catch the wind when moving in the other direction.
He's playing with us. This has never been about finding the truth or believing one idea over another. A troll is a troll. Trolls are best ignored, even if they seem to be talking sense. That is just their way to lure you in, to resume talking to them.
I am glad that I was able to find a thought experiment that is simple enough to explain to a teenager. Now, when someone talks about how the blackbird can't possibly work, I know how to explain it to them, so they can understand, even without knowing very much about physics or math.
I wish I could create an animation, but I have a million other things to do.
gnuarm:
--- Quote from: electrodacus on July 11, 2022, 05:04:35 pm ---
--- Quote from: gnuarm on July 11, 2022, 04:43:42 pm ---Any yet, they do, as proven by the multiple videos.
You have entered another realm of denial. I'm not going to continue to listen to your BS. I'm convinced that no one who claims to understand physics would not understand this simple model. So you must be trolling.
--- End quote ---
Zig zag is not direct down wind.
--- End quote ---
Why are you babbling about zig-zag?
electrodacus:
--- Quote from: gnuarm on July 11, 2022, 05:09:11 pm ---No, no one is so stupid as to believe the "average" speed of the sails are what is important when the sails are furled when moving in one direction, and open to catch the wind when moving in the other direction.
He's playing with us. This has never been about finding the truth or believing one idea over another. A troll is a troll. Trolls are best ignored, even if they seem to be talking sense. That is just their way to lure you in, to resume talking to them.
I am glad that I was able to find a thought experiment that is simple enough to explain to a teenager. Now, when someone talks about how the blackbird can't possibly work, I know how to explain it to them, so they can understand, even without knowing very much about physics or math.
I wish I could create an animation, but I have a million other things to do.
--- End quote ---
If you suffer from aphantasia then you will need an animation to understand.
If the vehicle speed is 10m/s the sail travels at 2.5m/s relative to ground for half the time (when it is above the vehicle) and at 12.5m/s relative to ground for the other half the time when it is under the vehicle.
What is the average speed relative to the ground ?
--- Quote ---Why are you babbling about zig-zag?
--- End quote ---
A sail vehicle will need to travel at an angle to wind direction in order to exceed wind speed.
No sail vehicle can travel directly downwind and exceed or even get to wind speed.
If you change directions all the time so that your net direction is downwind it means you are moving in zig-zag. This will not be considered direct downwind.
gnuarm:
--- Quote from: electrodacus on July 11, 2022, 05:51:40 pm ---
--- Quote from: gnuarm on July 11, 2022, 05:09:11 pm ---No, no one is so stupid as to believe the "average" speed of the sails are what is important when the sails are furled when moving in one direction, and open to catch the wind when moving in the other direction.
He's playing with us. This has never been about finding the truth or believing one idea over another. A troll is a troll. Trolls are best ignored, even if they seem to be talking sense. That is just their way to lure you in, to resume talking to them.
I am glad that I was able to find a thought experiment that is simple enough to explain to a teenager. Now, when someone talks about how the blackbird can't possibly work, I know how to explain it to them, so they can understand, even without knowing very much about physics or math.
I wish I could create an animation, but I have a million other things to do.
--- End quote ---
If you suffer from aphantasia then you will need an animation to understand.
--- End quote ---
The animation is for you and others who clearly don't understand what is going on. But it won't help a troll, so maybe not for you.
--- Quote ---If the vehicle speed is 10m/s the sail travels at 2.5m/s relative to ground for half the time (when it is above the vehicle) and at 12.5m/s relative to ground for the other half the time when it is under the vehicle.
What is the average speed relative to the ground ?
--- End quote ---
Irrelevant.
--- Quote ---
--- Quote ---Why are you babbling about zig-zag?
--- End quote ---
A sail vehicle will need to travel at an angle to wind direction in order to exceed wind speed.
No sail vehicle can travel directly downwind and exceed or even get to wind speed.
If you change directions all the time so that your net direction is downwind it means you are moving in zig-zag. This will not be considered direct downwind.
--- End quote ---
No, as is shown in this example, the same leverage is gained by a mechanism that pushes the sail toward the wind on the car. That's what tacking is doing, providing leverage to allow a vehicle to travel into the wind. No tacking is needed nor is helpful in traveling down wind. Using a fixed sail, a vehicle can not travel down wind faster than the wind. Install a moving sail or a propeller, and you can travel down wind.
You are a troll. You are a blatant, obvious troll. You will never admit to understanding what is going on here. The only reason you are posting is to get people to respond to you.
I should stop feeding the troll.
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