| 摘要 |
<p>A first copper pipe (1) is helical wound clockwise and a conical shape created. A second copper pipe (2) is wound anti-clockwise, also in order to create a conical shape. Both shapes (1,2) are joined at their wider ends (4,9) by soldering. The pipe forming the lower shape (2) is filled with a solution of water and silicon-oxide, the upper shape (1) with an EM-solution as described in the book of Franz Peter Mau. The ends (5,10) of the pipes (1,2) are closed and the construction dug in approximately ten meters apart from the building to be protected and connected to the earth wire (12).</p> |
