Resonant Acoustic Characterization of Coins: An Inquiry-Based Learning Activity for Everyone with a Smartphone
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
This study describes a new instructional laboratory activity where the acoustic frequencies produced by the resonant vibrational modes of coins are measured using smartphones. The resulting acoustic spectra allow for unique characterization of coins with different physical properties. This is an extremely accessible inquiry-based learning opportunity for students fostered by the powerful capabilities of modern smartphones and the widespread distribution of precision test objects: coins produced by national mints around the globe.
- Research Organization:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NNSA)
- DOE Contract Number:
- AC52-07NA27344
- OSTI ID:
- 1830948
- Report Number(s):
- LLNL-TR-829101; 1044799
- Country of Publication:
- United States
- Language:
- English
Similar Records
Characterizations of silver alloys used in modern Mexican coins
Rocket Launch Detection with Smartphone Audio and Transfer Learning
Inferring UAV Position Relative to Smartphone Sensor Based on Acoustic Characteristics
Journal Article
·
Tue Sep 15 00:00:00 EDT 2009
· Materials Characterization
·
OSTI ID:22082780
Rocket Launch Detection with Smartphone Audio and Transfer Learning
Journal Article
·
Sun Aug 10 20:00:00 EDT 2025
· Signals
·
OSTI ID:2585361
Inferring UAV Position Relative to Smartphone Sensor Based on Acoustic Characteristics
Program Document
·
Thu Apr 29 20:00:00 EDT 2021
·
OSTI ID:3019886