General > General Technical Chat

Electroboom: How Right IS Veritasium?! Don't Electrons Push Each Other??

<< < (128/148) > >>

PlainName:

--- Quote from: electrodacus ---That is why a vehicle with wheels only (so replace the propeller with a wheel) can not demonstrate output speed higher than input.
--- End quote ---

And yet...

https://youtu.be/yCsgoLc_fzI?t=822

Good lord! That's exactly what it's showing.

electrodacus:

--- Quote from: dunkemhigh on July 18, 2022, 03:46:05 pm ---
--- Quote from: electrodacus ---That is why a vehicle with wheels only (so replace the propeller with a wheel) can not demonstrate output speed higher than input.
--- End quote ---

And yet...

https://youtu.be/yCsgoLc_fzI?t=822

Good lord! That's exactly what it's showing.

--- End quote ---

It is not.
Floor is what powers the vehicle and the vehicle travels on the lumber.
As I mentioned confusing input with output.
That is the equivalent of a direct upwind (upfloor) vehicle traveling at about 0.3x the floor speed on the lumber.
Small wheels are the input (generator wheels) and the large wheel is the output (motor wheel).

PlainName:

--- Quote ---a vehicle with wheels only
--- End quote ---

Yep


--- Quote ---(so replace the propeller with a wheel)
--- End quote ---

Yep


--- Quote ---can not demonstrate output speed higher than input
--- End quote ---

Yep. Input from the force pushing the lumber, vehicle going faster.

Don't care if it's not a FTTW thing or if it wouldn't be practical using air instead of lumber, the fact is it does EXACTLY what you said it couldn't.

Now you're desperately searching for excuses - any excuse - as to why the exact thing you described is not actually the exact thing you described.

But I've given up, don't forget, so I'm not going to argue any more with you. I'm only here to laugh at your continued rail against reality, but this one was just too good to pass up.

electrodacus:

--- Quote from: dunkemhigh on July 18, 2022, 04:21:44 pm ---
Yep. Input from the force pushing the lumber, vehicle going faster.

Don't care if it's not a FTTW thing or if it wouldn't be practical using air instead of lumber, the fact is it does EXACTLY what you said it couldn't.

Now you're desperately searching for excuses - any excuse - as to why the exact thing you described is not actually the exact thing you described.

But I've given up, don't forget, so I'm not going to argue any more with you. I'm only here to laugh at your continued rail against reality, but this one was just too good to pass up.

--- End quote ---

Q: What is the input on that vehicle? 
A: The input is the floor.
Q: Are the small wheels driving the large wheel ?
A: Yes.

If you disagree with the two answers above you do not have the ability to imagine what happens in that setup and probably will need to do the test for yourself.
If you agree and still think that represents a faster than wind direct downwind vehicle instead of a direct upwind slower than wind vehicle then you think there is no such thing as an input and an output and you can use whatever you like.

cbutlera:

--- Quote from: electrodacus on July 18, 2022, 03:20:22 pm ---..
All that is needed for this not not work is replace air with a non compressible fluid or use solids so that energy can no longer be stored. That is why a vehicle with wheels only (so replace the propeller with a wheel) can not demonstrate output speed higher than input.
..

--- End quote ---

That gave me an idea.

How about hydraulic fluid. Is that incompressible enough?

Here is a cutaway diagram of a pipe pig I just thought up.  It is moving in a rectangular pipe with narrow racks down either side.  It has two gear chambers side by side, with their gears on common shafts so that they rotate together.  The pump gear chamber is pretty much a conventional gear type hydraulic pump.  The drive gear chamber is similar, except that it engages with two racks that slide through close fitting slots in the chamber walls.  Both gear chambers are immersed in hydraulic fluid.  The whole device is a close fit in the pipe, so that hydraulic fluid cannot leak past to a significant degree.  The closely meshing involute gears and racks prevent any significant amount of hydraulic fluid from passing through the drive gear chamber.

Whichever direction the  pipe pig moves, it will pump fluid from the front to the rear.  So if there is a steady flow of hydraulic fluid along the pipe, the device will be pushed in the same direction as the the fluid but it will move a little faster, due to the additional fluid being pumped to its rear.

I just throw this in as a contribution, I have no interest in wasting further time responding to any irrational comments on it.  I might respond to a rational comment if I feel so inclined.  I'm sure that ED will claim that either a) It will not move and the pipe will burst, or b) it will move, but the pipe represents the wind, the pig represents the ground and the hydraulic fluid is the vehicle (or some other unjustified permutation).  Whatever the claim is, I don't care.

Here is the Wikipedia page on hydraulic pumps https://en.wikipedia.org/wiki/Hydraulic_pump from which I copied part of my diagram.

Involute gear profile courtesy of Dr. Rainer Hessmer http://www.hessmer.org/blog/2014/01/01/online-involute-spur-gear-builder/

Why am I still here?

Navigation

[0] Message Index

[#] Next page

[*] Previous page

There was an error while thanking
Thanking...
Go to full version
Powered by SMFPacks Advanced Attachments Uploader Mod