X1014232438-00370-81113</DOCNO> Electromagnetic horn Fun with electromagnets Part two: electromagnetic horn An electromagnetic horn, operating much like an automobile horn, can be constructed from an empty metal can and few other materials.
(X1014232438-00370-81113</DOCNO> Electromagnetic horn Fun with electromagnets; operating; much) (X1014232438-00370-81113</DOCNO> Electromagnetic horn Fun with electromagnets; can be constructed; from an empty metal)
X1014232438-00370-81113</DOCNO> Electromagnetic horn Fun with electromagnets X1014232438-00370-81113</DOCNO> Electromagnetic horn Fun with electromagnets
operating can be constructed
much
from an empty metal