1.0Physics & Astronomyhttps://uwm.edu/physicsElle Cochranehttps://uwm.edu/physics/author/cochratcuwm-edu/Physics Colloquium - Mark Williamsenrich600338<blockquote class="wp-embedded-content" data-secret="AzH8gCTG2J"><a href="https://uwm.edu/physics/event/physics-colloquium-mark-williamsen/">Physics Colloquium – Mark Williamsen</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://uwm.edu/physics/event/physics-colloquium-mark-williamsen/embed/#?secret=AzH8gCTG2J" width="600" height="338" title="“Physics Colloquium – Mark Williamsen” — Physics & Astronomy" data-secret="AzH8gCTG2J" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script type="text/javascript">
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Mark Williamsen, Quantum Design, Inc Applications of AC Bridges in Cryogenic Measurements AC (alternating current) bridges have proven to be useful in making precise measurements at low temperature, including thermometry as well as length change with respect to either thermal expansion (dilatometry) or applied magnetic field (magnetostriction). Techniques now in use allow one leg of the bridge to be placed at the cryogenic sample site while the other legs remain at room temperature, with the intervening temperature gradient being imposed along a length of coaxial cable.