79 research outputs found
LC-Circuit Calorimetry
Full text linkWe present a new type of calorimeter in which we couple an unknown heat
capacity with the aid of Peltier elements to an electrical circuit. The use of
an electrical inductance and an amplifier in the circuit allows us to achieve
autonomous oscillations, and the measurement of the corresponding resonance
frequency makes it possible to accurately measure the heat capacity with an
intrinsic statistical error that decreases as ~t^{-3/2} with measuring time t,
as opposed to a corresponding error ~t^{-1/2} in the conventional alternating
current (a.c.) method to measure heat capacities. We have built a demonstration
experiment to show the feasibility of the new technique, and we have tested it
on a gadolinium sample at its transition to the ferromagnetic state.Comment: 6 pages, 5 figure
A scanning AC calorimetry technique for the analysis of nano-scale quantities of materials
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Variazioni Periodiche di Resistenza dei Filamenti Sottili Percorsi da Correnti Alternate, e Deddzione Delle Loro Proprietá Termiche a Temperatura Elevata
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Conferenze e discorsi di O. M. Corbino
Get PDF- Discorsi scientifici #11- Discorsi su temi politici ed economici #83- Commemorazione e necrologie #247- Indice #31
Sull' ineguale assorbimento delle vibrazioni circolari diverse per il passaggio attraverso a un vapore incandescente in un campo magnetico
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