| Author | Message | ||
     michele |
How can I build a wind tunnel? | ||
| Simon Quellen Field (Sfield) |
A simple one is described here and here. A replica of the Wright Brother's wind tunnel is descibed here. | ||
| ally Unregistered guest Posted From: 221.134.57.166 |
hi field, i would like to know the distance of null point above the superconductor, if a magnet is stable above sc at a distance of 2 mm. Thanks. ally | ||
| ally Unregistered guest Posted From: 221.134.58.51 |
help me out on above question | ||
| Simon Quellen Field (Sfield) Senior Member Username: Sfield Post Number: 680 Registered: 12-2004 |
What makes you think there is a "null point"? What are you expecting to go to zero there? | ||
| ally (Unregistered Guest) Unregistered guest Posted From: 221.134.58.113 |
Hello Field, Waited a long to get in touch with you. OK let me give my clear question........ What is the maximum levitation height that can be acheived by a magnet (rare earth) over a superconductor (YBCO). If dimension of magnet is --L*B*H , for superconductor--L1*B1*H1. The critical current , critical field , ctitical temp are also given. Is there any record height acheived yet ? Appreciate all your help and support. ALLY | ||
| Simon Quellen Field (Sfield) Senior Member Username: Sfield Post Number: 766 Registered: 12-2004 |
Why is it that you are asking superconductor questions under a wind tunnel topic? A superconductor is just a mirror as far as the magnet is concerned. The magnet sees an identical magnet in the mirror. Since it is a reflection, the north pole sees a north pole and the sourth pole sees a south pole, so they repel. So the height of the magnet does not depend on any property of the superconductor. It is entirely a property of the magnet, specifically the strength-to-weight ratio. |
