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2. Magnetic levitation - Wikipedia

   en.wikipedia.org/wiki/Magnetic_levitation

   Diamagnetic levitation seems promising because of its accurate control, zero friction, and zero wear, but becomes less reliable at higher payloads as its max bearing pressure is in the order of 102. Therefore, ferrofluids, with a max bearing pressure in the order of 2 x 104, have been studied to increase the amount of weight that magnetic force ...

3. Magnetic bearing - Wikipedia

   en.wikipedia.org/wiki/Magnetic_bearing

   A magnetic bearing. A magnetic bearing is a type of bearing that supports a load using magnetic levitation.Magnetic bearings support moving parts without physical contact. For instance, they are able to levitate a rotating shaft and permit relative motion with very low friction and no mechanical w

4. Bearing (mechanical) - Wikipedia

   en.wikipedia.org/wiki/Bearing_(mechanical)

   A ball bearing. A bearing is a machine element that constrains relative motion to only the desired motion and reduces friction between moving parts.The design of the bearing may, for example, provide for free linear movement of the moving part or for free rotation around a fixed axis; or, it may prevent a motion by controlling the vectors of normal forces that bear on the moving parts.

5. AOL Mail

   mail.aol.com

   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

6. Centreless wheel - Wikipedia

   en.wikipedia.org/wiki/Centreless_wheel

   Its hubless wheels are made from former truck tires, and a chain-driven friction drum provides power and brake force. [ 6 ] Designed "for casual cruising and slow ride-bys at shows", it consists of a 996 cc (60.8 cu in) fuel-injected Suzuki 4-stroke engine [ 7 ] in a steel frame covered by a fiberglass body with electroluminescent wire lighting.

7. Want to follow Santa's flight? Here's when NORAD and Google's ...

   www.aol.com/want-santas-flight-heres-norad...

   Trackers worldwide can also call 1-877-HI-NORAD (1-877-446-6723) on Dec. 24 to ask live operators about Santa's location from 6 a.m. to midnight MST. When does Google's Santa tracker go live ...

8. 10 best Walmart Advent calendars that haven't sold out yet

   www.aol.com/lifestyle/best-advent-calendars-that...

   Want a fun Advent calendar with a mix of holiday-themed gifts? This 24-day calendar at Walmart won't feature any name brands, but it does have a fun collection of snowman, Santas, and Christmas trees.

9. Stiction - Wikipedia

   en.wikipedia.org/wiki/Stiction

   Stiction (a portmanteau of the words static and friction) [1] is the force that needs to be overcome to enable relative motion of stationary objects in contact. [2] Any solid objects pressing against each other (but not sliding) will require some threshold of force parallel to the surface of contact in order to overcome static adhesion. [3]