The University of Iowa

Department of Physics & Astronomy

Instructional Resources and Lecture Demonstrations

Code Number: 3D30.77

Demo Title: Hot Chocolate Effect

References:

Dan MacIsaac, "Coffee/Hot Chocolate Cup Acoustics", TPT, Vol. 57, #1, Jan. 2019, p. 62.
Gorazd Planinsic, Eugenia Etkina, "Bubbles That Change the Speed of Sound", TPT, Vol. 50, #8, Nov. 2012, p. 458.
Samuel Phillips, Anurag Agarwal, and Peter Jordan, "The Annoying Dripping Tap", Physics Today, Vol. 71, #12, Dec. 2018, p. 70.
Roberto Zenit, and Javier Rodríguez-Rodríguez, "The Fluid Mechanics of Bubbly Drinks", Physics Today, Vol. 71, #11, Nov. 2018, p. 44.
Gorazd Planinšič, "Fizziology", Physics Education, Vol. 39, #1, Jan. 2004, p. 65.
Jearl Walker, "Reflection of the Rising Bubbles in a Bottle of Beer", The Amateur Scientist, Dec. 1981, p. 172.

Flying Circus of Physics: Coffee Acoustics

Weird Funny Acoustic Effect when making a Cup of Coffee

Hot Chocolate Effect

University of Maryland Physics Department QOTW Question #301

University of Maryland Physics Department QOTW Answer #301

3D30.77 - University of Maryland QOTW Question #301 Part 1

3D30.77 - University of Maryland QOTW Question #301 Part 2

3D30.77 - University of Maryland QOTW Answer #301

Disclaimer

These demonstrations are provided only for illustrative use by persons affiliated with The University of Iowa and only under the direction of a trained instructor or physicist. The University of Iowa is not responsible for demonstrations performed by those using their own equipment or who choose to use this reference material for their own purpose. The demonstrations included here are within the public domain and can be found in materials contained in libraries, bookstores, and through electronic sources. Performing all or any portion of any of these demonstrations, with or without revisions not depicted here entails inherent risks. These risks include, without limitation, bodily injury (and possibly death), including risks to health that may be temporary or permanent and that may exacerbate a pre-existing medical condition; and property loss or damage. Anyone performing any part of these demonstrations, even with revisions, knowingly and voluntarily assumes all risks associated with them.