labview1958

I intend to make a superconductor. Where can I get the superconductor powder not a disk? I want to use the powder to custom make my own custom disk.

Can we have a room temperature rail-gun?

How many minutes can a superconducting disk superconduct after the nitrogen supply is removed?

I agree each small chip will produce a corresponding smaller magnetic field. However does 100 small chips produce the same amount of magnetic field as one big chip? Let's say a 100 gram magnet is lifted 10 cm by the big chip, would 100 broken pieces of this big chip lift the 100 gram magnet by 10 cm?

If I break a superconducting chip into 100 pieces. Would the total superconducting strength be equal to the uncut chip in terms of the meissner effect?

Thanks SWANSON, Actually I am looking for superconducting samples the size of 1 mm. to do some testing. Right now I have some superconducting discs with a diameter of 20 mm. I was wondering whether if I break up my discs into particles of 1mm, will they still be superconducting? Or would they lose their superconducting property? Is the size relevant for a material to superconduct?

I have tried google etc. but I have not been succesful. I hope one of the forum members can help. I hope MCOY changes her/his ICON. It is not very tasteful.

Are superconductors, SUPER magnets? Some superconductors are made of Yitrium, Barium, Copper and Oxygen. Another group consists of Bismuth, Strontium, Calcium, Copper and Oxygen. Could Copper be replaced with Aluminium as it is possible in Lenz law, eddy current etc?

Anyone who can help further?

Anyone up to the challenge?

Is there a better forum for physics regarding magnets? Please direct me!

How "small" has a superconductor been made in a lab? What is the current record for the "smallest superconductor" and the "smallest magnet"?

Thanks. One more question. How small can a superconductor go? Does the smallest superconductor have a diameter of 1mm or 1 micron?

I am trying to connect SUPERCONDUCTIVITY with LENZ LAW through EDDY CURRENT! What more information do you want? One of my questions is does the thickness of a superconductor important in the MEISNER effect?

Anyone out there?

Where is everone? Anyone that can direct me to forum with more people regarding superconductivity, Lenz Law, Eddy Current etc.

Any comments? Anyone out there? Is there a better forum for physics regarding LENZ LAW, EDDY CURRENT, PARAMAGNETIC, DIAMAGNETIC, SUPERCONDUCTIVITY, MAGLEV etc? Please direct me.

"SMALL" here means how small can be made in a factory or lab at a reasonable price say not more than US100 dollar a piece. How "small" a NIB magnet and a superconductor can go and still show MESINER effect?

Is the torque in Newtons or Newton meter? I want the drag force in Newtons. How to calculate I? I can convert the RPM to velocity of the edge of the wheel as I can measure the radius of the wheel. The wheel moves like a bicycle wheel(vertically) and not like a CD(horizontally).

Anyone out there?

Is the drag force related to the centripetal force?

I am doing a study on electromagnetic drag force. A spinning copper wheel is brought near a magnet. The RPM of the wheel immediately slows down. Let's say from 1000 RPM to 900 RPM. How to calculate the DRAG force? The DRAG force has slowed the wheel by 100RPM. How many NEWTONS is that? Anyone can HELP?

Copper and Aluminium become magnetic if a magnet is moved near them. This is something to do with Lenz Law and Eddy currents. Could magnets be made from copper and aluminium. I understand superconductor use a bit of copper and aluminium.Any comments?

How small can a NIB magnet be? How small a superconductor can go? Anyone tried using the smallest NIB and the smallest superconductor?

I have a small aluminum/copper wheel attached to a drill. I have a magnet placed on a digital weighing machine. As the wheel revolves with a high speed the wheel is brought near the magnet from above. A repulsive force between the magnet and the copper/aluminium wheel occurs. As a result the magnet is pushed downwards. At the same time the copper/aluminium wheel slows down as a result of EM drag force. Q1. Does the thickness of the copper/aluminum matters? Q2. Can we calculate the drag force from how much the wheel has slowed? Q3. Would replacing the copper/aluminium wheel with a superconducting wheel give similar results?