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The evolution is accelerating. We will soon become subservient to our digital rotating rodent overlords….and I for one welcome them and offer my services in any way I can be of use to them.

Guessing it's a function of rate of rotation vs acceleration due to gravity, and that 1/5th of the height just happens to line up properly for a 270 degree rotation.

You can also just lay the wood against the fence and rotate it by hand. This is a really neat tool though and it would definitely feel safer.

I’m thinking Mt Chimborazo in Ecuador…at over 20000 ft, it’s peak it the farthest from the center of the earth (while not being the highest above sea level thanks to the equatorial bulge).
Sure, it doesn’t remove air resistance or friction, but halving it, even cutting it by 1/3 is a massive leap in efficiency and negates much of the extreme engineering and materials needed to overcome the friction….plus, as you mentioned, there’s the rotational speed advantage from launching on the equator vs Florida.
Also, while extremely minor, there’s also a slight reduction in gravitational pull at those heights. A joule saved is a joule earned!

Using a mountainside might help with structural integrity, but it's not likely to give much air resistance advantage if I'm reading the math correctly. The 5 highest peaks in the US are all in Alaska and and range from just under 5km to just over 6km. Commercial jets using air resistance/density for lift fly at about 10km and even at 38km aerodynamic lift still carries 98% of the weight of the plane (https://en.wikipedia.org/wiki/K%C3%A1rm%C3%A1n_line)

Air density is halved at 5km compared to sea level, but air resistance doesn't diminish as quickly (due to it being multiplied by velocity squared and drag coefficient), and only becomes irrelevant (for short-term purposes) around 100km at the Karman Line.

If we had a 5km peak in Florida, the lack of logistical costs might make the benefits worth it, and if we could build on one of Equador's 5km peaks, then there's the further advantage of equatorial location for optimal rotational advantage (part of the reason we launch from South Florida)

Maybe he'll claim Biden's his secret puppet President-o-bot and therefore he can run 2024 as his 3rd term. Just like his master Putin rotating between Russia's President & Prime Minister-ship. That's his MAGA way of achieving his Third Reich.

The creator put some answers in the comments:

How the heck did i make it?

The living room of my father's place had a very strong ceiling fan, which could go in reverse. Instead of blowing air down, it would pull the air up. That would create an updraft strong enough to sustain the vortex. Next, I had a box fan and a blanket set up to redirect the air flow so it rotated around the center of the room. You can see it as the dark blue object in the back right. After the fans were turned on, I laid out an old dark red bed sheet with a small PVC pipe underneath it connected to a fog machine. The bed sheet allowed the fog to gently seep through and get pulled into the vortex, as opposed to being blasted out of the pipe. And then it was all a matter of letting the ceiling fan's updraft and the box fan's rotation mix into a 10 ft tall indoor tornado!!

It would have been a rare occurence indeed for the head of a science project to share the accolades with a student. She was second on the original paper.

Also remember this is a Nobel prize for physics, so it is very much to be had for the scientist who starts the project, creates the equipment, sets goals, is reserved when the student finds something new but then listens to her, the hypothesis and confirmation part is important and was not ms. Bells work...

So yes, the astronomical observation and discovery of the first two pulsars is hers.

The Nobel prize for physics for the discovery of pulsars went to the two scientists that contributed the most to the confirmation of the rotating neutron star hypothesis. IMHO rightfully.

Could a student have been included, man or woman? Unlikely.

I would be interested to see what would happen just before the disk stopped and suddenly there was no gravity. Even though it sounds like it's spinning faster I'm sure it's just because the edge of the disk is just closer to the mirror.

Suddenly without gravity would the energy cause the disk to rotate making it look like a ball floating in space or would it wobble and take off in one direction?

Could this even be done in space?

Are there any mathematicians in the audience tonight?

Are four questions in a row too much?

Those are decent points, but have absolutely zero to do with the mass abandoning of their positions. It was 100% due to one of their own being charged after beating nonviolent protesters. They originally admitted exactly that, and now that they aren't being supported in their walkout, they are coming up with excuses that didn't matter to them the day before the officer was charged.

I think they should have to pay for the training and equipment they now refuse to use.

What are you talking about? You think budget cuts caused time off to be cancelled?! It costs double to not rotate in other officers, because you pay those on duty overtime, it doesn't make it cheaper. Budget cuts were not the issue when these cops were doing crowd control, only now that they're suddenly called to account for their own actions. No time off temporarily, because of extreme circumstances, was not an issue until one of their own was charged. It's certainly not abnormal, and absolutely not because of budget cuts, it costs more.

No prosecutions is the norm, if I recall, over 98% of charges levied at protesters have been dismissed nation wide, mostly because police had no evidence to back the charges they brought. You might note, as described in the article, "Mr. Schmidt immediately announced that he would focus on prosecuting cases of violence or vandalism; protesters who simply resisted arrest or refused to disperse after a police order would not necessarily be charged." They are taking a stand against anarchic violent protesters, but not the peaceful protesters with a legitimate gripe about violent, racist, deadly police acting as an anarchist gang that believes rules only apply to you, not them.

There are few prosecutions in large part because police declare riots when all participants are peaceful and not causing damage, and police are almost always the one's giving the orders to remove the people they declared "rioters", and in most cases they have zero evidence to back up their declarations, and are as violent as possible, beating peaceful videographers and reporters who were trapped and could not disperse, then charging them with refusal to disperse and resisting arrest, even violence against police for attacking police batons with their faces.
(Edit: remember the freeway shutdown when they marched on the freeway, and police blocked them from exiting or continuing while a second group of police came from behind, forcing them into a small fenced in area with no exit, then charged them all with refusal to disperse and the few that tried to disperse were charged with attacking police officers who blocked every escape route, violently attacking anyone trying to leave...all on live tv?)
Many peaceful protests became riots only after police moved in to violently disperse protests, fully 1/2 were riots because counter protesters and bad right wing actors like proud and boogaloo boys were planting bombs, shooting crowds, starting fires, driving through crowds, and murdering police in an effort to paint protesters as violent anarchists. That is verified fact directly from the DOJ investigation.

It's not a Portland only thing, police abandoning their communities because, as they indicated to the DA, "“It was like, ‘There’s our team and there’s their team, and you are on their team and you’re not on our team. And we’ve never had a D.A. not be on our team before,’” Police assume they are on a team against citizens, and won't do their jobs if, by doing them wrong with bias and malice, they might be prosecuted. They are used to immunity, and don't know how to do their jobs without it because they are abusers of power.

One day after charges were levied they quit in solidarity with the criminal abusive cop, and came up with fake excuses later.

You seem to have missed "the Justice Department said that the city’s Police Bureau was violating its own use-of-force policies during crowd-control operations, and that supervisors were not properly investigating complaints." part.

In this case, I sympathize because Portland has refused to assist or back any of their police in the riots there. The DA has refused to charge anyone who resists arrest or refuses to disperse after police have been given orders to remove rioters (they are rioters. even the Mayor is now saying to stop calling them protesters and to call them anarchists instead).

Why would anyone want to go out, night after night, and face the same people you arrested the night before doing the same stuff?

The fact also exists that Portland has made massive cuts to the police budget. That has led to time off being cancelled for police, no rotations to move fresh police into the riot situations so the same ones have to deal with the face to face confrontations with no break, and the alternative policing option which was hands off was tabled. "A paramedic and a social worker would drive up offering water, a high-protein snack and, always and especially, conversation, aiming to defuse a situation that could otherwise lead to confrontation and violence. No power to arrest. No coercion."

There are a lot of problems with police, for sure. Portland's government is the driver behind these issues, though. Until they start taking a stand against these anarchist, violent protesters (who are PREDOMINANTLY white), the situation will not get better.

https://www.nytimes.com/2021/06/09/us/portland-protests.html

The best way I could think of to look at this is that the vehicle has very little mechanical drag so it accelerates to the speed of the wind, at which point it becomes static with respect to the wind speed, but the ground is essentially running back under it rotating the wheels ant thereby the propeller.

It still seems very counter-intuitive, unless there is a lot of inertia involved, that this would work so well.

Congratulations! Your video, AquaSpinner Waterslide - Europe's first Rotating Slide, has reached the #1 spot in the current Top 15 New Videos listing. This is a very difficult thing to accomplish but you managed to pull it off. For your contribution you have been awarded 2 Power Points.

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