Study: Yes, tapping on frescoes can reveal defects
Ars Technica » Scientific Method 2024-11-21
Summary:
Acousticians put a traditional "knock" test for delaminated areas to the test.
Link:
https://arstechnica.com/science/2024/11/how-sound-aids-in-preserving-frescoes-in-us-capitol-building/From feeds:
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