Lecture 10: Bolometers - Leiden Observatory
Lecture 10: Bolometers - Leiden Observatory
Lecture 10: Bolometers - Leiden Observatory
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Temperature Coefficient of Resistance<br />
Detection of Light: <strong>Lecture</strong> <strong>10</strong><br />
We want to talk about how the temperature of the<br />
bolometer changes its electrical resistance, so we talk<br />
about the temperature coefficient of resistance:<br />
So, R depends on the temperature:<br />
↵ = ↵(T )= 1<br />
R<br />
dR<br />
dT<br />
The sign of the Temperature Coefficient leads to very<br />
different behaviour for a bolometer.<br />
...where and are constants<br />
R0<br />
Units of K 1<br />
B
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