Zero Elevation

@GeneModifiedCat @Mandlbaur @alexboge There is certainly less friction acting on the moon compared to a handheld ball on a string rotating with 30-40 rps at 20 cm string length. But in @Mandlbaur 's parallel universe friction is always negligible because the physics primers don't mention it.

@Mandlbaur @Ferrari_ball @alexboge What conclusion are these people trying to escape, exactly? Spell it out.

These two geniuses think I’m a flat earther and moon landing denier. On my post mocking moon landing deniers... 🙄😂

@GeneModifiedCat @Mandlbaur @alexboge It was great fun when we reached the 12000 rpm the first time with our stable setup. Of course the kitchen toys John suggests can't reach it. I don't know what else he means by "every time".

@Mandlbaur @alexboge @Ferrari_ball I will repeat myself. Just this once. "12000 rpm is wrong" - You No logic. No supporting evidence. No measurements. Nothing but your assertion. Pretend there's a big red circle around that, if it makes you happy.

@GeneModifiedCat @Mandlbaur @alexboge We tested it with our stable setup, a ball bearing, a 10 g lead ball and a Kevlar strings. In contrast to Mandlbaur's poor version we reached the 12000 rpm and confirmed CoAM over 80% of the radius reduction. It is great fun for our students.

@Mandlbaur @alexboge "12000 rpm is objectively wrong" - You Your paper provides NO basis for this conclusion except non-existent injuries caused by you projecting a hypothetical scenario from a textbook to an actual real classroom. I am open to an explanation, from you, for the direct quote above.

@SevernDweller @Mandlbaur @packers_owner_j @Chucktown_Tiger @alexboge John uses math he never understood and tries to apply to cases where its premises are not given. Then he demands to use kitchen equipment to violate the premises even more. And he calls people morons? What a master of projection.

@Mandlbaur @packers_owner_j @Chucktown_Tiger @alexboge Your maths is blagged from an 80s textbook. Well done. Congratulations on being able to copy it and use the wrong units. That shows incredible understanding.

@SevernDweller @Mandlbaur @Chucktown_Tiger @alexboge @Mandlbaur used simple marble tracks and expected them to produce "free" energy because he thought you get the promised energy increase without work against centrifugal force. This is hilarious for many reasons. Directional forces in tracks can't do work and there is torque.

@Mandlbaur @Chucktown_Tiger @alexboge If momentum is conserved, then pulling the string results in an outward spiral. Is that what happens? You not understanding vectors just makes these statements ludicrous.

@Skippy_Bush_Roo @Mandlbaur @vadabac340 @Danish_SMF The textbook is right if you reduce friction by using a stable axis and a ball bearing instead of a handheld tube. And whoosh - you easily reach the 12000 rpm with even slower pulls than @Mandlbaur with his lousy version.

@Mandlbaur @vadabac340 @Danish_SMF The textbook is right for the simplified content being taught, but wrong if you expect it to be reproducible experimentally. Is this literally the only physics problem you've seen? The 'spherical cow in a vacuum' line exists for a reason - textbooks often isolate concepts.

Calling my understanding of science and trust in its process as 'blind faith' doesn't make your faith less blind. It just projects your method onto mine.

@bo_ptah @rawcastdigital @FTFEofficial Using a syringe and flash paper nicely demonstrates how thrust in vacuum works. youtube.com/watch?v=yRfDwk…

@rawcastdigital @FTFEofficial You don't need a degree in rocketry to understand the NASA thrust equation. But you don't have the mental bandwidth to understand that.

Flat earthers all claim they are super smart and me and all other globers are dumb Here's a challenge to any flat earther. We both put £5k in escrow, then take a A level physics exam at the same time. Whoever scores the highest takes the money all the money.

@SevernDweller @Mandlbaur @AstroSpanner @messigoat1899 @Scotty_D_J "then he would not be able to say that you absolutely evidence blind moron." The evidence clearly shows torque, no matter what Dr. Young says.

@Mandlbaur @AstroSpanner @Ferrari_ball @messigoat1899 @Scotty_D_J I think he asks "how much torque am I giving it?" He makes no comment on the torque in the system itself. You said "for centuries". Surely you can show me a classical example? Your paper mentions Newton. I thought you'd be overwhelming me, not misquoting YouTube videos.

Here's an experiment. Gather all the flerfs in the world and put them on a remote island. Just let them do their thing. How long would it take them to discover the Earth is round? 100 years? 1000 years? Never? Perhaps a small subsidiary would make the discovery & be bannished.

@SevernDweller @Mandlbaur @AstroSpanner @messigoat1899 @Scotty_D_J Dr. Young clearly says "no torque along the string", the video analysis shows a 7%/rev. loss of angular momentum, i.e. torque. The textbook clearly says "ASSUME no torque" for the sake of simplicity, not "there is no torque" in any version of the ball on the string.

@Mandlbaur @AstroSpanner @Ferrari_ball @messigoat1899 @Scotty_D_J The experiment has never been declared torque negligible. Ever. If you can show me those two words together in any mention of ball and string ever, I'll concede that you are correct. Otherwise, you've just made this up. Fair?

@atreiyuh @DavidRu31988626 @Danish_SMF @Mandlbaur John conflates a simplified math exercise in a physics primer with a poor demonstration experiment limited by friction, air drag and wobble. He calls these distortions "excuses" and "shifting the goalposts". What a genius.

@DavidRu31988626 @Danish_SMF @Mandlbaur Its seems crazy to me that you would try and use a scalar models with so few variables to predict a non theoretical outcome.

That's false. Angular momentum conservation has been tested and confirmed countless times, ice skaters, gyroscopes, neutron stars, satellite launches. It's one of the most quantitatively verified principles in physics. Saying 'it is not' conserved isn't a fact, 2

@Danish_SMF Within the solar system angular momentum conservation is shown with 9 significant digits. Only for mercury there was a deviation from Newton shown: the tiny perihelion rotation can be explained by general relativity.

If angular momentum weren’t conserved, everything from planetary orbits to particle accelerators would fail. Show me a controlled, closed-system experiment, not a reinterpretation of equations.

@vadabac340 @Mandlbaur @Danish_SMF ,@Mandlbaur wanted to invent a perpetual motion machine using marble tracks. For several reasons his "professional prototypes" didn't work as expected. Now he blames his old physics text book for making wrong promises. Just Google his name and "bluemoonshine". John is famous.

@Mandlbaur @Danish_SMF I will read it. What were you developing? Does it work?

@Danish_SMF You are right, @Mandlbaur rides this dead horse for more than ten years. Before you waste your own precious time on this crackpot have a look at what a physics professor wrote: bluemoonshine.fun/Project-Pseudo…

2 it's a falsehood. I trust it because of evidence, not authority. If you're going to critique science, learn what science actually says first. Otherwise, you're not debating, you're just making things up.

@SevernDweller @Mandlbaur @messigoat1899 @Scotty_D_J The perpendicular component remains constant? Let's check this with a central force, a marble in a parabolic bowl: pisrv1.am14.uni-tuebingen.de/~hehl/videos/P… At the nearest and farest points the velocity is purely perpendicular, but near the center it moves much faster than at the farest points.

@Mandlbaur @Ferrari_ball @messigoat1899 @Scotty_D_J How does an ellipse look if the magnitude of momentum is conserved? Sorry, that's vectors. I think we've done that. Ok, you've just shown you couldn't even accept millions of data points and dismissed them with hand waving nonsense. Good luck out there. ☘️

@SevernDweller @Mandlbaur @messigoat1899 @Scotty_D_J John is an expert in pulling unsupported claims out of his rear end. They reach from "yanking" over "Newton's second law is technically disproven", "the solar eclipse came too late" to "light has mass".

@lizyy99 @realPaulMJ @alexboge @ShamoldSteven Maybe you had Karen Nyberg in mind: youtube.com/watch?v=uIjNfZ… This didn´t look like hairspray, rather like weightlessness in free fall.

@realPaulMJ @alexboge @ShamoldSteven Thank you for the diagram. Hard to know what to believe - maybe if they didn’t feel the need to used so much hairspray it would be more believable.

Ever notice… Not one aerospace engineer, orbital mechanic, rocket propulsion specialist, avionics technician, mission controller, flight dynamics officer, structural engineer, materials scientist, thermal systems engineer, optical physicist, radio frequency engineer, radar operator, satellite tracking analyst, astronomer, astrophysicist, cosmologist, geologist, planetologist, atmospheric scientist, meteorologist, oceanographer, biologist, medical doctor, flight surgeon, military pilot, test pilot, naval officer, intelligence analyst, CIA operative, NSA signals analyst, Pentagon official, defense contractor, weapons inspector, UN observer, foreign government, rival space agency, Roscosmos engineer, ESA mission planner, JAXA scientist, CNSA analyst, ISRO researcher, science journalist, investigative reporter, documentary filmmaker, professional photographer, photogrammetry expert, digital forensics analyst, CGI artist, VFX supervisor, Hollywood special effects technician, AI researcher, computer vision scientist, image authentication specialist, metadata analyst, cryptographer, academic peer reviewer, university professor, Nobel laureate, or government oversight committee - anywhere around the globe, in any country, speaking any language - has identified a single frame of Artemis II as fake. But TruthSeekr666 and NasaLies420 has spotted it all. Every photo. Every video. Obvious CGI. Total AI slop. Weird how that works.

@lizyy99 @realPaulMJ @alexboge @ShamoldSteven What has the angular size of the earth and its (ir)relevance for shielding meteorites hitting the moon to do with hairspray and beliefs?

@SevernDweller @Mandlbaur @messigoat1899 @Scotty_D_J These are recent measurements, not theoretical data. The first precise measurements were done by Tycho Brahe, which Kepler brought to his three laws of planetary motion, not vice versa. The second law is nothing else but conservation of angular momentum for ANY central force.

@Mandlbaur @Ferrari_ball @messigoat1899 @Scotty_D_J La la la la la. Get your fingers out of your ears. "The theory of Mars"? You absolute tube.

@SevernDweller @Mandlbaur @messigoat1899 @Scotty_D_J We reduce the radius 2-5 times slower than the Labrat and conserve angular momentum over 80% of the initial radius. Mandlbaur holds the speed record of 1.4 s and only 11 revolutions. His handheld version failed due to strong wobble. Reducing friction and a stable axis is the key.

@Mandlbaur @Ferrari_ball @messigoat1899 @Scotty_D_J Didn't you say that the force on the string has no effect on the energy of the system? Also the textbook says "light string". Kevlar has the same density as polyester, so each is equally as compliant with the textbook. If you only have one data point to cling to...

@theerealtao @Mandlbaur Before you waste your time: There is a detailed analysis of Mandlbaur's claims made by Prof. Val Rousseau: bluemoonshine.fun/Project-Pseudo…

If it's true, it shouldn't fear questioning.