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Friday, July 31, 2009

Magnetic Levitation using the Meissner Effect

The Meissner effect (also known as the Meissner-Ochsenfeld effect) is the expulsion of a magnetic field from a superconductor. Walther Meissner and Robert Ochsenfeld discovered the phenomenon in 1933 by measuring the magnetic field distribution outside tin and lead samples. The samples, in the presence of an applied magnetic field, were cooled below what is called their superconducting transition temperature. Below the transition temperature the samples cancelled all magnetic field inside, which means they became perfectly diamagnetic.

Diamagnetism is defined as the generation of a spontaneous magnetization of a material which directly opposes the direction of an applied field. However, the fundamental origins of the diamagnetism in superconductors and normal materials are very different. In superconductors the diamagnetism arises from the persistent screening currents which flow to oppose the applied field; in normal materials diamagnetism arises as a direct result of an orbital rotation of electrons about the nuclei of an atom induced electromagnetically by the application of an applied field. Very recently, it has been shown theoretically that the Meissner effect may exhibit paramagnetism in some layered superconductors but so far this paramagnetic intrinsic Meissner effect has not been experimentally observed. Mario Rabinowitz and his colleagues showed that a virtual violation of the Meissner effect is possible.
Superconductors in the Meissner state exhibit perfect diamagnetism, or superdiamagnetism, meaning that the total magnetic field B=0 within them. This means that their magnetic susceptibility, = −1.


They detected this effect only indirectly; because the magnetic flux is conserved by a superconductor, when the interior field decreased the exterior field increased. The experiment demonstrated for the first time that superconductors were more than just perfect conductors and provided a uniquely defining property of the superconducting state.


Observation of the Meissner effect is difficult, because the applied fields have to be relatively small (the measurements need to be made far from the phase boundary). This is because the penetration depth is temperature-dependent and tends to be infinitely close to the phase boundary


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Friday, July 24, 2009

Gyroscopic Inductance





A Gryoscope is a device for measuring or maintaining orientation, based on the principals of angular momentum. The device is a spinning wheel or disk whose axle is free to take any orientation. This orientation changes much less in response to a given external torque than it would without the large angular momentum associated with the gyroscope's high rate spin.


Go to these links to know more http://en.wikipedia.org/wiki/Gyroscope

http://www.youtube.com/watch?v=cquvA_IpEsA



Now we will look at someone who has put the gyroscope to intelligent use.

Behold a new innovation of producing DC current with zero gravitation.
This is a new design in Gyroscopic Inductance circuit for DC current production using the gyroscope itself as an inductor for long term space flight. The two non-permeable gimbals armatures rotate around a permanant inner magnet 180 degrees out of phase with one another giving 360 degrees of a full rotation that allows a 100% duty cycle when precission occurs. A noth and south alignment on the spherical inner permanant magnet rotates around the central centrifugal spin axis which doubles as a rotor flywheel.

This person has been working on this prototype for 15 years and is now utilizing nano carbon fibres as the coils in the inductor circuit; they are embedded into the gyro's non-permeable gimbals in a zig-zag pattern unlike the cails in a induction circuit.

This design has several viable applications for the aro space industry. If solar panel deployment fails or damages to solar panels occur, this serves as a solid back up for running the system operations for satellite, imaging and comunication instrumentation devices for space flight.

This is an email that was forwarded to me.

Monday, July 20, 2009

Hidden Electricity

How does the telephone work? Does it use electricity? Yes it does! Then why does it works still when electricty goes in you area? Answer me this first, energy can not be created or destroyed but can be converted to one form to another...by the law of conservation of energy, what energy a telephone uses then? Imagine having electricty when electricity has gone, hmmm but the electricity in the phone outlet is small but there are ways to magnify electricity by the use of transistors, resistors (it will be helpful to know colour coding) and bridge rectifier.

Another cool idea to follow up in years to come.

Watch this video found on the popular website "You Tube"....

http://www.youtube.com/watch?v=WoaLGvJkoP8

Sunday, July 19, 2009

Levitation Idea!

What if you had the power to levitate? Where would you go? Ever thought of using magnets to levitate. Remember opposite poles repel. What if u can coat you feet with a N-pole and the floor with a S-pole? Intresting is it not? What about your weight...will the power of the repulsion be great enough to surpass you weight F=mg < q(B x v)sin@? Crazy idea ....but in reality a toy that uses this mechanism has already been created. It is called the Rod driver. It constist of a magnetic top floating above a base magnet without any strings attached. Hmmm what should be the base area if you are to use this idea? Hmm this is just one of my many wonders I must discover.


Read more on www.roddriver.com

Introduction of Magnets

A magnet is any material or substance that posesses a magnetic field. This can be man made ( such by electromagnetism...which we will talk about later on) or it can be natural (meaning found on earth). A magnetic field is the space around a magnet that exerts a force. This can either be a pulling (attractive) force or a pushing (repulsive) force. In modern days now this force is very important to us now. This force helps us operate machines and motors and it is essential to know the numerical value to operate these devices. How do we calculate this force???

The force is given by F=qE...which is also known as F=q(B x v)sin @.
E is electric field strength, B is the magnetic flux density and v is the velocity. sin @ is the angle between B and v. Think of it on a X-Y-Z cartesian plane. F is perpendicular to the plane v and B lies on. The direction of F is given by the right-handscrew rule.

Magnetic Flux, B, is produced either by permanant magnets or electric currents.

For more incite into magnets visit www.howmagnetswork.com

Welcome

I am Mark Richards, founder an C.E.O of Elecmag Technologies.My company has not started as yet. This my first step of opening my dreams. I am a student in the University of the West Indies. I am currently persuing an Electrical Engineering course and plan to invent using magnetic, electricity and sound technologies. I will also be investing in these type of technologies. Currently my capital is a mere penny but this is where u start in life. I currently work part time in Republic Bank as a start to generate capital. Soon i will open my company's account so any donations will be appreciated. This site will not only facilitate my company but help others who are currently engaged in magnetic and electrical courses. I admit I will be a little shaky at first...but this is where a start in life begins.
This course will not also teach you some topics on electricity such as power factor but it will show you technologies around the world with my interest.

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