Awesome New Record: Euler's Disc spinning for 3 ½ Minutes скачать в хорошем качестве

Awesome New Record: Euler's Disc spinning for 3 ½ Minutes

This video shows a DIY Euler's Disc, that spins for over 3 ½ Minutes. Transcript: DIY Euler's Disk spinning for 3 minutes and 36 seconds This is a ring made from polished Tungsten Carbide with a brass weight pressed into it. The reflexion in the mirror looks like a face. It makes quite a strange noise. It's running on a 7x magnifying bathroom mirror. I removed the back side of the mirror and glued it to its housing with super glue. Then I poured plaster into the hollow housing to make it rigid and heavy to prevent vibrations. At the beginning it spins like a normal spinning top. The rotation speed is slowly going down. But then ... ...the frequency is slowly rising again. It starts the "spolling" motion (spinning and rolling) that is typical for Euler's Disk. Tungsten Carbide is a very hard material. It is used to make cutters for lathes and milling machines. In combination with the glass, which is also quite hard, there is very low rolling friction. Riding a bike with tires pumped up hard on a street made from concrete is easier then with low tire pressure over a lawn. Right? Tungsten is also very heavy. It's sometimes used to make fake gold ingots. The heavy tungsten and heavy brass store a lot of potential and kinetic energy. But unfortunately rolling resistance and sliding friction are proportional to the weight. But air resistance is independant of the weight so it's better to use heavy materials. On the moon with 1/6 of the weight and without air it would run much longer. Or on Planet Pluto where it has only 1/16 of its weight! YES, I KNOW, that Pluto is officially now longer a planet. But for ME it will allways be a planet! It's just not fair! Imagine you have been respected for over 70 years as a true planet. And all of a sudden you are called a "Dwarf planet" !!! Dwarf planet !! Couldn't they at least have named it "Planet of short stature" ?!? Did you watch the film "Falling Down" with Michael Douglas? It shows what will happen when someone is no longer respected! If I was Pluto I would leave my orbid, set the course for "Planet (!)" Earth and crush these arrogant earthlings. (except the brave people of Illinois) Sorry, I'm afraid I have become a little bit too emotional ! Isn't it strange: Pluto has such a good reputation, but the metal that was named after it is rather unpopular. Plutonium !!! Okay, enough now, you seem a little bit too chatty to me. Now let's concentrate again on Euler's Disk! The wobble motion is very fast and getting faster at the end. But the rotational movement (indicated by the arrow) is getting slower at the end. This is what you don't see very well when watching the commercially available Euler Disk with its fancy holographic stickers on it. For all skeptics: No tricks withs hidden magnetic stirrer under the table, because the disc is non magnetic. But counterfeit money looking like copper and being only copper plated iron. What you see in the middle is grease from my hands spreaded to a circular area by the motion of the disk. Plaster (lacquered) Yes, I should have cleaned it with acetone before showing this video to you and other honorable members of the scientific community. And I did clean it and wanted to make a new video! But the clean version was spinning for only 2 Minutes! I tried different types of grease and oils. I even tried Lithium grease with Molybdenum disulfide (MoS2) ! This is that type of grease that would make normal grease slip, fall to the floor and break its leg. Didn't work as good as human grease from Latheman666. Or should I say superhuman grease ? YES! I have a shower every day !!! Wrong side. Brass is not hard enough. Even thin paper will stop the disk. A long hair donated by a young lady. I simply can't afford anymore to pull out one of my fewer and fewer own.