Quantum Physics and the Levitation of Nanomagnets

British mathematician Samuel Earnshaw proved that there is no configurable way to levitate permanent magnets, and if one magnet were to be levitating over another, the smallest disturbance will cause it to fall. Oriol Romero-Isart's research group from Innsbruck University and the Institute for Quantum Optics and Quantum Information at the Austrian Academy of Sciences have shown that the gyrating motion of a magnetic top causes a system correction when the magnets are disturbed. Nano objects are in charge of this correction.

Albert Einstein and Wander Johannes de Haas found in 1915 that magnetism is a result of electron spin, which allows the levitation of a nano magnet in a stable electric field, which should be impossible according to Earnshaw's theorem. The researchers' studies showed that equilibrium was achieved when dissipation did not occur, which relied on the gyromagnetic effect. This effect stabilizes the magnetic levitation of the nano magnet.

Levitated nano magnets are a new field of experimental study that the team is excited to observe. Exotic quantum phenomena can occur during the experimentation of the nano magnets under unstable conditions. These levitated nano magnets can also be used for technological applications, like high precision sensors.

Image result for magnetic top

Comments

Physics of Sound Dampeners and Active Noise Cancellation

Physics of Sound Dampeners and Active Noise Cancellation Sound dampening foam panels in a recording studio. ANC headphones worn by pilots and/or passengers in consumer aviation aircraft. Acoustic treatment of soundscapes has grown alongside the sound production industry. Whether through absorption panels, diffusors and cloud panels to treat a space or headphones placed directly over the ears of listeners, acoustic treatment comes in many forms. Environments are treated acoustically to absorb excess sound to prevent sound levels from crossing a threshold above which the desired goal cannot be had. Before getting into sound dampening, we must discuss sound. Sound is produced when an object vibrates (a form of oscillation) and temporarily displaces nearby air molecules causing a wave effect as the displaced molecules collide with their neighboring molecules. Sound waves are fluctuations in pressure as the initial displacement of molecules experiences collisions that in ...

Large Hadron Collider

The Large Hadron Collider (LHC) is the world’s largest and most powerful particle accelerator. The LHC is the largest machine in the world. It took thousands of scientists, engineers and technicians decades to plan and build, and it continues to operate at the very boundaries of scientific knowledge. It first started up on 10 September 2008, and remains the latest addition to CERN’s accelerator complex. The LHC consists of a 27-kilometre ring of superconducting magnets with a number of accelerating structures to boost the energy of the particles along the way. Map of LHC (located in Geneva, Switzerland) Thousands of magnets of different varieties and sizes are used to direct the beams around the accelerator. Just prior to collision, another type of magnet is used to "squeeze" the particles closer together to increase the chances of collisions. The particles are so tiny that the task of making them collide is akin to firing two needles 10 kilometres apart with suc...

Aerodynamics of a Golf Ball

One may wonder how a small golf ball can travel at incredibly high speeds for such long distances. While the swing of the club is a major component, the structure of the golf ball is quite important. Unlike a baseball or tennis ball, a golf ball has dimples all over it (usually 336 dimples). These dimples allow the golf ball to travel without facing much air resistance. This diagram shows how air travels around the golf ball. The dimples on the golf ball also prevent drag that would occur in the wake region, resulting in further distance. Also due to the contact with the club during the swing, the golf ball has backspin during its entire flight. This diagram shows the motion of the golf ball mid flight with the lift force of F. There are hundreds of different types of golf balls that a player can choose. Some show little affect to a player's game while others can alter their performance completely. Personally, I prefer Callaway Supers...

LSA E Mech 2017-18

Search This Blog