Q:Can magnetic energy be transmitted?

A magnetic object will magnetize a magnetic material close to it into a magnet, and a new magnet will magnetize the magnetic material close to it...... In theory, there is no end to it. But the weaker the magnetism, the less likely it is to ignore the magnetic transmission you ask

Q:What can i use to contain a magnetic field. ?

I used to work with these magnets. Things won't fly at you at high speeds, but you have to worry about credit cards, just keep them away. 12, 1 ft is sufficient. Also, magnetic fields won't harm computers, but they will destroy disk drives. It should come in a wooden box that will keep the magnet far enough away from other metal to cause harm (or stick to). There are ways that you can contain the field (note the London effect and super conductors), but this is really not practical. Just use a little common sense and keep it away from things until you want to use it. And be careful because these can and do move unexpectedly (and very fast) and can cause damage.

Q:Can the voltage level of high frequency also effect the amount of opposition through an inductor?

The current could, by saturating the magnetic material. Real magnetic materials have just so much they can handle before they saturate. This is the basis for Magnetic Amplifiers. Look it up. In old books, I think. Not much used anymore.

Q:What are the best materials that a magnetic force cannot move through? e.g another magnet on the other side wouldn‘t be affected. Effectivity and weight are also important factors for my question.

I know exactly why you need this materiallook up OMNI'S INFINITE ENERGY SOURCE,on utube.its quite simple.if we can negate at least 45% of magnetic push or pull,magnets can be used too create an infinite energy source,the only problem isoverheating.if you can find a way too keep cool a power source that is infinite.youv'e got what you need,other than that,its flawed deeply,The machine would explode causing damage equal too how far the machine went before exploding,which could be anywhere between,one stick of dynamite,and the biggest explosion created by man,but.you would still need materials that could hold up too that amount of power,which we have none of,the only other thing i can think of,is too switch the machine on,and find another way of switching it offbefore it causes damage,I think you'll like this video,good luck,but remember,there are people who wont allow this sort of tech,until the world stops privatisation.i'm afraid we are stuck with nuclear facility's.

Q:What is magnetic induction and a magnetic field? Also, what is an electric field? I don‘t undersand the concept so it‘s difficult to solve the numericals. Any help is welcome.Also the what is the earth‘s magnetic field and why do we have one?thanks

magnetic induction is the concept that a changing electric field (from an electron accelerating around a loop say) produces a magnetic field. An electric field is the force measured around a point charge or wire. When there are two point charges together in space the electric field is the carrier of the force which is exerted between the two charges. The earth's magnetic field has a value of 5 x 10^-5 Tesla or 0.00005 T The earth's magnetic field is generated by the movement of the liquid iron outer core revolving around the solid iron inner core. Hope this helps a bit. What level are you at? College, University, School?

Q:do you know how to build a magnetic shield (or case) to protect the tape stripe cards using by ATM machines? I need it to be like a case which fits in a pocket and also can be made at home.thankyou.

That's not so easy as you might think,. Magnetic fields are very hard to block, and go through most materials like their not even there. What electronics uses for shielding is iron bases metal- that is - Steel the concentrate the magnetic field within itself, protecting what ever is on the other side. General solution? common sheet metal bent to a card holder and line with some cloth.

Q:How do we differ an ordinary (non magnetic) steel/metal from the magnetic one?Note that we are not allowed to use any helping tools to identify the magnetic capability of the material, that includes breaking the metal with the aim of looking for the magnetic directions.The question was given on today‘s lecture, the students must look for the answer by themselves.Thanks in advance. Sorry if my question is not clear, English is not my native language.

It is difficult, because the unmagnetized magnets look like ordinary metal. If you have one or two strong Neodymium Magnets, you can try to magnetized the metal, and you can find if the metal can be magnetized. I have tried to use Neodymium Magnets to magnetized 1 small alnico magnet, it works. :) We also will use SmCo Magnet to orient the Alnico magnet during heat treatment for some special request, but it is not a common method. It is very interesting. We supply magnets, but we are professional on Alnico magnets. I just can say something I know which we have a test. :)

Q:I‘m working on a school project, and it involves electromagnets. The thing is that I want to find a way to block electromagnetic radiation so that the magnets won‘t cause damage to external devices like cellphones.

I doubt that a cell phone would be damaged by an electromagnet, though there are a few things that would, like a compass or the pacemaker for my heart. To block electromagnetic waves, (ie: radio waves), a thin solid sheet of any conducting material, like iron, steel, copper, etc., will block those. For that matter, even fine copper screening will block radio waves if it's grounded. To block magnetic fields takes a little more. Use a sheet of any magnetic material, such as steel. (If a magnet sticks to it, it will block or greatly attenuate magnetic fields.) An especially good material is called Mu metal. It may not be available now. It used to be used to enclose picture tubes and other CRTs, (Cathode Ray Tubes), in TVs, oscilloscopes and other sensitive equipment. Whatever material you use, you would need to make a totally enclosing box to contain it. Good luck!

Q:Double end grinding machine grinding magnetic materials why the lack of angle?

Double face grinding machine is a kind of highly efficient plane machining machine. It can process two parallel ends with high precision and surface finish in one stroke.

Q:I am unsure as to whether or not the metal that moves within said field must be ferromagnetic.

It needn't be ferromagnetic. The changing magnetic field will produce an electrical current in the copper. Feromagnetism is the metal being brought near the magnetic field taking on a strong magnetic field.