Oldest known version of this page was edited on 2010-08-03 20:11:42 by JohnMadero []
<p class="Titolo">Mulinello elettrico</p>
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<h5 class="western">Altra denominazione</h5>
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<p><em>Molinello elettrico</em></p>
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<h2 class="western"><span style="font-size: small;">N° di catalogo</span></h2>
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<p><span style="font-family: Century Gothic,sans-serif;"><strong>B</strong></span></p>
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<p><span style="font-family: Century Gothic,sans-serif;"><strong>627</strong></span></p>
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<h2 class="western"><span style="font-size: small;">Armadio</span></h2>
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<h2 class="western"><span style="font-size: small;">5</span></h2>
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<h2 class="western"><span style="font-size: small;">Ripiano</span></h2>
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<h4 class="western"><span style="font-size: small;">3</span></h4>
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<p><span style="font-family: Century Gothic,sans-serif;"><strong>Ditta Costruttrice/ Registro originale</strong></span></p>
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<h4 class="western" style="font-weight: normal;"><span style="font-size: small;">66</span></h4>
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<h4 class="western"><span style="font-size: small;">Epoca</span></h4>
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<h4 class="western">Fine 800</h4>
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<p><span style="font-family: Century Gothic,sans-serif;"><strong>Misure</strong></span></p>
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<h4 class="western" style="font-weight: normal;">Ø 60 x 150</h4>
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<h4 class="western">Materiali</h4>
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<p><span style="font-family: Century Gothic,sans-serif;">Legno - ottone</span></p>
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<p> </p>
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<p style="page-break-after: avoid;"><span style="font-family: Century Gothic,sans-serif;"><span style="font-size: small;"><strong>Inventore</strong></span></span></p>
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<p> </p>
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<p><span style="font-family: Century Gothic,sans-serif;"><strong>Argomento</strong></span></p>
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<p><span style="font-family: Century Gothic,sans-serif;">Elettrostatica</span></p>
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<p><span style="font-family: Century Gothic,sans-serif;"><strong>Fenomeno</strong></span></p>
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<p><span style="font-family: Century Gothic,sans-serif;">Potere delle punte</span></p>
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<p> </p>
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<h5 class="western">Scheda tecnica</h5>
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<p><span style="font-family: Century Gothic,sans-serif;">Il piccolo strumento serve per dimostrare il cosiddetto potere delle punte. Si collega il sostegno metallico con un polo di una macchina elettrostatica mentre l'altro è messo a terra. Si vedrà la linguetta a forma di </span><span style="font-family: Century Gothic,sans-serif;"><em>esse</em></span><span style="font-family: Century Gothic,sans-serif;">, posta in bilico sull'ago terminale del sostegno, ruotare rapidamente in senso opposto alla punta. Poiché l'aria è conduttrice in quanto contiene ioni positivi e negativi liberi, il fenomeno si spiega pensando che gli ioni dello stesso segno con cui è elettrizzata la punta sono da questa respinti e quindi la respingono a loro volta per il principio di azione e reazione.</span></p>
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