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How to do explosive art
Materials needed
- 2 mm leads (hardness recommended: HB-medium);
- Wires with crocodile clips;
- A4 sheets of paper (grams per square metre
recommended: 160 g);
- Plug with bipolar power supply wire, duly modified by
separating phase from neutral;
- Power socket (230 V).
Procedure
- Position the A4 sheets on a flat surface or simply on
the ground;
- Lay the leads on the sheets of paper in a casual way
(it is a good rule to lay at least one mine on each sheet);
- Connect each lead to the closest one by their ends,
using the wires with crocodile clips;
- Connect the first and the last lead respectively to
the plug’s phase and neutral;
- Make sure that the leads-terminals sequence is a
closed circuit;
- Connect the plug to the socket;
- Wait for the leads to catch fire (a few seconds will
suffice);
- Disconnect the plug from the socket.
Technical information
Graphite, of which leads are made, is a mineral, an electrical
conductor that disperses energy in the form of
heat when electricity is run through it, according to the so-called
“Joule effect”.
The power dispersed in the form of heat can be represented by this
formula:
P=V^2/R
where P is the dispersed power, V is the voltage (230 V) and R is the
resistance offered by the conductor.
Credits
Work by:
Technical support by:
- Gabriele Frediani
- Paolo Malfatti
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