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jj, toto je jeden zo standardnych experimentov. S teplotou sa meni
sirka zakazaneho pasma polovodica a ledka ktora svieti pri izbovej
teplote na zlto po zaliati kvapalnym dusikom zmeni farbu. Ak si spravne
pamatam smerom do zelena, sirka pasma sa so znizujucou teplotou zvysuje
a vyssiu energiu ma zelene svetlo. V skole som to mal pred 10 rokmi, je
celkom mozne ze si to uz dobre nepamatam :-)<br>
Kvapalny dusik by mal byt lahko zohnatelny.<br>
b.<br>
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<br>
Šerých Jakub wrote:
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<div dir="ltr" align="left"><font color="#0000ff" face="Arial"
size="2"><span class="062031922-16022008">Myslim, ze tento experiment
zvladne vice lidi nez jen Balu :-) Staci si zajit do Linde pro bandasku
tekuteho dusiku a s LEDkami se deji pekne veci. Krasne meni pri
podchlazeni barvy.</span></font></div>
<div dir="ltr" align="left"><font color="#0000ff" face="Arial"
size="2"><span class="062031922-16022008"></span></font> </div>
<div dir="ltr" align="left"><font color="#0000ff" face="Arial"
size="2"><span class="062031922-16022008">Jakub Serych</span></font></div>
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