Gyroscopes: Rotation, Precession, and Nutation

Рет қаралды 37,209

7 жыл бұрын

This video illustrates the phenomenon of Rotation, Precession and Nutation and how the frequency of Precession and Nutation depends on the frequency of Rotation and relates this to the Precession and Nutation of the Earth.

Пікірлер: 48

@g1fcg Жыл бұрын

I ended up here after reading the description of an old sci-fi movie on Talking pictures, 'The day the earth caught Fire' (1961) I learned about gyroscopic rotation and precession in 'ground school' for aviation, but I'd never heard of Nutation! I've learned something new - amazing!

@kasunperera5398 2 жыл бұрын

One of the best explanations Ive ever heard of this convoluted subject

@alieb977 2 жыл бұрын

You explained these phenomena perfectly! Thank you very much!

@m.ssharma535 6 жыл бұрын

Brilliant explanation. Thank you.

@mdkashif2560 3 жыл бұрын

Thank you very much! Finally I was ab,e to discern precession from nutation. ☺️

@MDMAx 5 ай бұрын

You the MPV! I'm reading "The Gyroscope" by Cambridge Uni online and you made finally sense for me of the nutation :)

@thomasmaier7053 3 ай бұрын

Great explanation, cheers!

@JSCRocketScientist 3 жыл бұрын

Excellent explanation and your demonstration equipment is genius.

@mhandy2196 4 жыл бұрын

very well done...thank you for the presentation

@lazykat607 6 жыл бұрын

Thanks for the video!

@davidperalta7 Ай бұрын

Great video!

@gitanshuverma154 2 жыл бұрын

Much obliged for this.

@redstroll 6 жыл бұрын

Amazing!

@stevenavilesmatos8926 4 жыл бұрын

Thank You.

@pokerboy72 4 жыл бұрын

Thanks a ton sir.. gratitude from India

@eternalentertainmenttelevi7069 Жыл бұрын

Thank you

@david203 4 жыл бұрын

I had to calculate the exact formulas (ignoring very tiny error terms) in graduate physics class at Temple University many years ago, and then present the exact explanation to the class. While the formulas given here are not exact, they do give a feeling of what is going on. All that is missing is an explanation of why precession and nutation really occur, and this requires more detailed analysis than was done here of the orthogonal rotation produced as the weight attempts to drop due to Earth's gravity field. Ordinary Newtonian mechanics can get very complicated!

@jiansun7202 3 жыл бұрын

What formula did you use?

@david203 3 жыл бұрын

@@jiansun7202 That was about 50 years ago. I've certainly forgotten all the details. All I can say is that some textbooks probably do the same analysis I did. Start by considering the experimental apparatus when it is not spinning. Gravity will appear to pull it so it rotates in a particular way. That is the start of the analysis, that rotation due to gravity. It gets much more complex from that point on.

@AstralApple 2 жыл бұрын

Very helpful thank you.

@ryangulland4322 Жыл бұрын

Don't think it's very unstable, it's just also experiencing nutation. Probably the most extreme example I've ever seen mind you ~

@SeattlePioneer 5 жыл бұрын

I've been watching lots of these videos and am s-l-o-w-l-y beginning to understand the effects you describe. I would like to see you give a practical example of calculating procession speed and force so I can understand the units used and such, and to see how accurately the results seem to be reflected in the apparatus being demonstrated.

@mauriceapollo8688 3 жыл бұрын

I guess it is kinda off topic but do anyone know a good place to stream newly released series online?

@javierissac2792 3 жыл бұрын

@Maurice Apollo I would suggest Flixzone. Just search on google for it :)

@edwardbaker9026 3 жыл бұрын

@Javier Issac Yup, I've been using flixzone for since march myself =)

@mauriceapollo8688 3 жыл бұрын

@Javier Issac thanks, signed up and it seems like they got a lot of movies there :D Appreciate it!

@javierissac2792 3 жыл бұрын

@Maurice Apollo No problem :D

@user-mp1ll9jr6g Жыл бұрын

Thank you sir

@upland90254 3 жыл бұрын

So if rotation frequency goes to zero in your equation, the precession will be infinite, right... ;)

@HypercarSpirit 2 жыл бұрын

I think you just proved that x/0 is not equal to infinity

@luntik7843 3 жыл бұрын

Cool

@aky68956 3 жыл бұрын

Great explanation. Loved it.

@Thephilpw99 5 жыл бұрын

I don't understand it. The formula is counter-intuitive and not fitting the observation. 1. F progression speed is proportional to the R? So if the pole is longer we will have faster progression speed? How can that be? I thought longer pole will cause slower progression. 2. F progression speed is counter-proportional to the rotation speed of the wheel? So when the wheel spin slower we will have faster progression speed? If the wheel spin is closer to 0 then we will have an extremely fast progression speed! How is it possible?

@david203 4 жыл бұрын

Sorry for the 4-month delay in answering. We don't have good intuition (commonsense physics) for these effects. You have to actually do experiments to see what happens, you can't just guess, like you just did. "Thought experiments" don't work well for understanding precession and nutation until you understand the physics in more detail. There are also more subtle effects in a gyroscope, other than precession and nutation, that are difficult to measure and even less intuitive.

@glennguinsad5019 Жыл бұрын

Nice video, flat earthers won't understand it though

@Aquariotp 6 жыл бұрын

Why does the Earth revolve around itself? What tilted the earth at 23.5 °? What caused the precession movement?

@ansjikhodro4680 4 жыл бұрын

the earth shape made it tilted at 23.5 cause its not round completely and indeed its closed to an oval shape but not rounded again something close to potato shape. so the center of gravity for the northern sphere and the southern are not match exactly. that cause the earth tilted! the gravity force of the sun considering that 23.5 tilt angle cause the precession.

@columbiabuzz 9 ай бұрын

Don't drop it, that is unneeded impact to travel stop. Let it down gently. Also, moving the counter weights towards the mass will tend to balance the devics and give a more desirable presentation.

@SaeedAcronia 4 жыл бұрын

Nice video but I really don't see how the precession gets slower after your modifications 😂

@jeffo9396 3 жыл бұрын

I think what he should have done was spin the gyroscope faster using an external motor instead of his hand.

@zhaohuihuang7501 6 жыл бұрын

one arc minute is one 60th of one degree. He did not say correctly.

@jonmeadow8706 4 жыл бұрын

Now! How to use the math of nutation to predict earth's changing climate. The length of the sign curve from one complete wobble to the next should give us a clue. Then there is the longer sine curve expressed by the precession of the equinoxes. Math experts ought to look at past epochs of sign curve duration to see the future. This would determine the affect pollution has on climate as well; which I think is less than nutation. Climate change is real, but we need to look at the natural components of it to determine our foot print and how severe it actually is.