PHY ICS - The Institute of Physics in Ireland
PHY ICS - The Institute of Physics in Ireland
PHY ICS - The Institute of Physics in Ireland
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7 ELECTRICITY & MAGNETISM<br />
Magnetic forces us<strong>in</strong>g button magnets<br />
<strong>in</strong> a test tube<br />
CZECH REPUBLIC: Leos Dvorak and team<br />
Horizontal<br />
Magnets equally spaced<br />
Magnetic Force Act<strong>in</strong>g<br />
Button Magnets 12.5mm dia (available from Peat’s) fit neatly <strong>in</strong>to the<br />
test tube.<br />
By plac<strong>in</strong>g the magnets <strong>in</strong> pairs there will be twice the distance <strong>in</strong> the<br />
horizontal case.<br />
<strong>The</strong> vertical case provides a useful analogy for the graduation <strong>in</strong> density<br />
<strong>of</strong> the atmosphere.<br />
Further topics: Newton’s Third Law, Magnetic Damp<strong>in</strong>g, etc.<br />
Vertical<br />
Graduation <strong>of</strong><br />
distances<br />
Magnetism and<br />
Weight Act<strong>in</strong>g
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