Thanks Jesse, I had considered giving that toy a try. The design of toys is clearly targetted at low cost manufacture rather than minimising friction. I have experienced an electric motorised gyroscope toy whose spinning element was subject to so much friction it showed fast precession without me doing anything to it.

@fromjesse

Жыл бұрын

I gotta admit, this toy is exceptionally cool for a toy. Of course it would have been cooler with super low friction bearings all around in the gimbal but hey it's still a very nice toy/learning tool!

@everybodylovesballs

Жыл бұрын

@@fromjesse I have one too and even knowing the physics involved, it still feels weird when it "pushes" against your hand when you try to move it in certain directions.

Hot tip: Gyros like these can be spun up to ridiculous speeds if you're willing to risk a few bruises. :) Get a hold of a 20.000 rpm motor somehow and I'd say that thing could track the earth. Oh and clean the bearings (NOT WATER!) and add some fine oil. I guess they're not even roller bearings, just 'pins' (bushings). (And no, the gyro can definite not 'explode' at those speeds.)

Something told be the toys weren't good, they're toys.

Quick question about the gyro itself... Do they spin for the full 25 minutes that the manufacturers claim on their website?

@fromjesse

6 ай бұрын

I'm not sure if it spins the full 25 minutes, but I can assure you that by the end of the 25 minutes it's just barely turning. The very slight imbalance of the flywheel causes shake which dissipates energy. This causes the speed to decrease rather rapidly at first, but as the speed decreases the energy loss due to vibration also decreases, so once it slows down to a fraction of it's initial speed, it does turn at a low speed for a very long time. Unfortunately, at that low speed, the gyroscopic effect is nowhere near enough to track earth rotation.

I wonder if clockwork ruby with a needle seat bearing pair would work for this application then?

@fromjesse

Жыл бұрын

I have thought about that. I'm not sure if it would work or not. I have tried those for some other (heavier) experiments, but the weight was too great and it bent the points of the needle - and it was a proper clock bearing needle point. If I cannot get the roller bearings to work I'll definitely look at the feasibility of using clock jewels.

couldnt you track the earths rotation with the gyroscopic precession then?

Question - If you wanted to demonstrate the Earth's rotation with a gyroscope, what kind would it take to do so? A $20,000 ring laser gyro will do it (Thanks, Bob!), and a toy like you demonstrated won't. So, where's the cut off? I don't think a standard gyrocompass would work, because it's designed to give an accurate heading. It isn't designed to show the drift. I'd think you'd have to make modifications for it to show the (extremely slow) movement of the Earth spinning.

@fromjesse

Жыл бұрын

Yes, I need to replace the bushings with roller or ball bearings in the gimbal, which I plan to do! For the record, a gyrocompass is something more complex. It actually uses earth's rotation to point to true north without using the magnetic field of the earth! Very cool machinery. Also, I did use 3 old vintage aircraft heading-indicator gyroscopes to show earth rotation in a previous video: kzread.info/dash/bejne/qoKNuZqDh7C8f7w.html Also, Stephen P. built a gyro from scratch which showed earth rotation: kzread.info/dash/bejne/aZ6HxM-Idb3fYNY.html

@janimelender2674

Жыл бұрын

"It isn't designed to show the drift". The only design you need is a low enough friction gimbal, and it definitely has that, or....... I think the 'compass' part wouldn't even work. I forget exactly how gyrocompasses work (they're an oooold invention).

Didn’t ww2 bombers use a torsion wire which untwists using a servo loop? Essentially the wire twists first allowing zero friction, then servo loop turns the bearing so the wire won’t twist too much.

@fromjesse

4 ай бұрын

Quite likely. That same technique is in use in mechanical gyrocompasses on ships all around the globe right now!

@weirdsciencetv4999

4 ай бұрын

@@fromjesse very good video you made there too, I subscribed!!

Looks like you need better bearings.

@fromjesse

3 ай бұрын

Yup.

Thanks for proving that a slow rotation causes the Axle of the flywheel to Tilt and SHOW the slow rotation....IF the Earth were actually rotating. Thank you very much. Loved how sensitive and how responsive the Tilt of the Axle was, even though the lower bar didn't stay still, like it does with a faster Rotation.....It simply reflected and re-acted to the Slow rotation by TILTING the Axle orientation right in step.....Thank you so much for proving that a Precision Mechanical Gyroscope can and will show the Rotation of the Globespell should it ever become True.

@fromjesse

Жыл бұрын

You are most welcome! Did you see my other video where I used aircraft grade gyroscopes to show 15 degrees per hour of earth rotation? kzread.info/dash/bejne/qoKNuZqDh7C8f7w.html

@dr.davidbannerf.e.s.6217

Жыл бұрын

@@fromjesse That's odd, because the Earth doesn't rotate or move. And there has never been any mechanical gyroscope showing that the Earth is moving. I have seen so many people try so hard, and even people try parlor tricks when they couldn't make the Earth move. I have even seen people place small weights on one side of the gyroscope housing to make it slowly precess, and then they were like "see! the Earth is moving".......very funny, but no the Earth doesn't move, or a mechanical gyroscope left on the table would show it......There's no need for tricks if it's really moving ya know.

@fromjesse

Жыл бұрын

@@dr.davidbannerf.e.s.6217 I didn't add any weights to my gyroscopes to cause them to show apparent drift. I didn't modify anything inside them between running them directly aligned and then at right angles to the North Star. You really should watch the video clear through: kzread.info/dash/bejne/qoKNuZqDh7C8f7w.html The fact that some other gyroscope that has too much friction doesn't show apparent drift doesn't mean that mine doesn't. You mention a gyroscope that didn't show drift while sitting on a table, and you are probably referring to Rob Durham's video where he did just that. But if you watch his video carefully, he himself noticed a friction drag wire on his gyroscope which he didn't know what it was for. But it is there to cause some friction specifically to keep it drifting while the plane is sitting on the runway, watch right here in his video: kzread.info/dash/bejne/Z5WAmsOoYKnOdpM.html See that wire? If he had removed that, he would have probably gotten drift! Besides, even without any earth rotation, an gyroscope with perfect bearings would have SOME drift, unless it was ABSOLUTELY PERFECTLY balanced. And none is absolutely perfectly balanced. So the fact that his didn't drift at all is proof positive that it did have some internal drag (obviously caused by that friction drag wire) -- so he needs to re-do his experiment with that wire removed. The gyros I used did not have that drag wire, and they also did not have the gear so they were very very much more freely moving. And all three showed a drift rate difference of 15 degrees per hour. Remember, the fact that a sticky gyroscope doesn't show earth rate rotation doesn't mean that it could or that others don't. It turns out that gyroscopes that do very freely move do show earth rate rotation, or apparent drift. In Fact, Stephan P. made one and he proved that the apparent drift was not from imbalance by changing spin direction of the weight: If the drift is caused by weights being out of balance as you suggest, then changing the spin direction of the flywheel would also change the drift rate. That's is a fact, you can try it yourself. However, when he changed the spin direction, the drift direction did NOT change, proving that it was being caused by something _outside_ of the gyroscope. kzread.info/dash/bejne/aZ6HxM-Idb3fYNY.html

@nazalostizsrbije

11 ай бұрын

​@@dr.davidbannerf.e.s.6217can you show me people who put weights on the gyroscopes?

@stuartgray5877

6 күн бұрын

@@dr.davidbannerf.e.s.6217 - " because the Earth doesn't rotate or move." Except for the part where I have been HANDS_ON measuring earth rotation and curvature using fiber-optic gyros for almost 30 years. Modern aircraft use earth rotation to test the onboard fiber-optic gyros before a flight USING EARTH ROTATION. So modern aircraft measure earth rotation tens of thousands of times a day worldwide. this is proof that you are only repeating lies.

Now, if they could only understand that rotating once per day is not very fast.

@dr.davidbannerf.e.s.6217

Жыл бұрын

Thanks for proving that a slow rotation causes the Axle of the flywheel to Tilt and SHOW the slow rotation....IF the Earth were actually rotating. Thank you very much. Loved how sensitive and how responsive the Tilt of the Axle was, even though the lower bar didn't stay still, like it does with a faster Rotation.....It simply reflected and re-acted to the Slow rotation by TILTING the Axle orientation right in step.....Thank you so much for proving that a Precision Mechanical Gyroscope can and will show the Rotation of the Globespell should it ever become True.

@bendlyte

Жыл бұрын

@@dr.davidbannerf.e.s.6217 precision mechanical gyroscopes DO show rotation of Earth.

@dr.davidbannerf.e.s.6217

Жыл бұрын

@@bendlyte You can stop pretending. None of them have ever shown any rotation. Ever. You can get one and find out.

@bendlyte

Жыл бұрын

@@dr.davidbannerf.e.s.6217 they have, you can see for yourself if you cared about the truth.

@dr.davidbannerf.e.s.6217

Жыл бұрын

@@bendlyte None of them ever have, you can see for yourself, and you can get one and do it for yourself. Look----> kzread.info/dash/bejne/eJWgzNuKc9OrZbg.html

Those bearings are appalling, without a closeup it looks like they are just bushes not bearings at all, it's a shame that they built it down to a price.

@fromjesse

Жыл бұрын

Yeah, the stock gimbal bearings are just umm friction joints. The upper ones are stainless in stainless, and the lower one is stainless in brass with a black plastic washer. Definitely a toy, but still pretty nice for a toy.

There is no earth movement… Gyroscope proves this. Just that simple.

@fromjesse

Жыл бұрын

Mine do.

@travybear2463

Жыл бұрын

@@fromjesse Stop with the lies already.. Your video proved otherwise.

@fromjesse

Жыл бұрын

@@travybear2463 hey hey be nice! My video showed quite clearly that the earth is rotating at 15 degrees per hour.

@travybear2463

Жыл бұрын

@@fromjesse The earth is definitely not moving. If you put that same gyroscope into a helicopter or hot-air balloon that was hovering in place for an hour, it would show a 15degree movement even though you hovered in place and didn’t move an inch. 15degrees would be 1000miles in an hour on the globe model, that means the helicopter should be able to hover in one spot for an hour, earth rotate under you and then land 1000miles away. The gyro is simply measuring the movement of the sky above a stationary realm. Globe DENIED!

@fromjesse

Жыл бұрын

@@travybear2463 hey, instead of just dissing my efforts, why don't you tell us about some of the evidence you've gathered yourself?

The super precision gyroscope toy can't show the Earth's rotation because the Earth doesn't rotate...

@fromjesse

6 ай бұрын

> _The super precision gyroscope toy can't show the Earth's rotation because the Earth doesn't rotate..._ Well, but even if earth was rotating, it still wouldn't show it. Besides, earth doesn't rotate then why do REAL AIRCRAFT GRADE GYROSCOPES show 15 degrees per hour of rotation? kzread.info/dash/bejne/qoKNuZqDh7C8f7w.html

Fun experiment to do on an airplane. All phones can download the bubble app from iTunes… it uses the mini gyroscope in the iPhone to get readings….Here’s what I did… Was on an airplane from Las Vegas to Hawaii, about 2500 miles or 36 degrees globe circumference difference… I zeroed out the level in the floor of the plane at take-off, it measured about 15 degrees ascent/descent and then once at cruising altitude it leveled out showed a constant 3 degrees backward tilt as the plane accelerated, just like a boat does when you hit the gas… The gyro/bubble did not show the 36 latitude/longitude change when I landed. It measured EVERYTHING else though! Turbulence, banking turns etc etc. a perfectly flat and level flight 10% of the way around the “globe”. GLOBE DENIED.

@fromjesse

Жыл бұрын

Yeah of course, the software compensates any gyro drift based on the average direction of level based off of the accelerometers. If you look up the drift rate of the gyro chip in the iphone, it far exceeds 15 degrees per hour. The software has to slowly correct the gyro reading for drift. I dare you to try it with a gyroscope that is not in a phone, a gyroscope that does not have a built in accelerometer to correct the gyro drift. Globe accepted!

@travybear2463

Жыл бұрын

@@fromjesse It’s inside the closed system of a plane, not outside in the open on the wing. How would the gyro know the planes speed once at a cruising altitude?. The phone is in airplane mode and has no idea of its gps location. The gyro showed a level flight 10% of the way around a globe. That’s not possible on a ball. I am assuming you know about “rigidity in space”. The Gyro will stay in the position it is spun up at. Try this yourself. The globe does not pass the scientific method.

@fromjesse

Жыл бұрын

@@travybear2463 Yeah dude, your phone has tilt sensors in it too. They are called accelerometers. Look it up. It really does. What model of phone do you have? The app in the phone uses the tilt sensors to compensate and keep the gyro adjusted to level. Of COURSE it would remain level, because it's measuring the direction of down by using the accelerometer chip. And I notice you still haven't shared _your_ personal observations on this either.

@travybear2463

Жыл бұрын

@@fromjesse So why didn’t the tilt sensors register the 36 degree tilt after landing 2000 miles away? Flying 10% of the way around a ball is about 36 degrees. Zeroed at the gyro on the ground in Hawaii, showed a 15 degree tilt during take off, got to cruising altitude, and was then level for 2000 miles to Las Vegas… landed perfectly level in relation to the runway in Hawaii.

@fromjesse

Жыл бұрын

@@travybear2463 The only people I block are rude people and illiterate people. You've been reasonably polite but you're illiterate. You're not reading what I'm writing. The accelerometer chips in the phone compensate for change in angle based on the direction of down. The phone has gravity direction sensors in it dude! Grow up and read what I'm writing. Then go look up the specs on the gyro and accelerometer chip in your phone. You will see that the datasheet lists the drift for the gyro chip is FAR greater than 20 degrees per hour. You will know that the phone is using the gravity sensor to compensate for gyro drift. Being on a plane would be a very slow drift in angle, and the phone would just think it was gyro chip error drift, and would compensate. Please look up the data on your phone's gyro chip before coming back here and repeating your same false claims.

How about use a digital gyroscope like on a smart phone that are much more sensitive. This will show the earth isn't moving. The world needs to wake up

@fromjesse

Жыл бұрын

If you actually look up the phone, find out what model of gyro chip is in it, and get the datasheet for that chip and find out what the drift is, I think you'll find that it far exceeds15 degrees per hour, and would those be useless. But I encourage you to try it. Get a gyro-display app, turn off the accelerometer and compass, and use JUST the gyro and see just how badly it drifts when it's not depending on the tilt sensor or magnetic compass to stabilize it. Please check into it. You're just wrong. Cheers