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The Frahm Resonance Apparatus: Variations on a Theme
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10.1119/1.4818375
/content/aapt/journal/tpt/51/6/10.1119/1.4818375
http://aip.metastore.ingenta.com/content/aapt/journal/tpt/51/6/10.1119/1.4818375
View: Figures

Figures

Image of Fig. 1.
Fig. 1.

Frahm frequency meter in the Greenslade Collection. This instrument was imported into the United States by James G. Biddle of Philadelphia.

Image of Fig. 2.
Fig. 2.

Frahm top in Greenslade Collection. This came from William Jewell College and was once used by the well-known demonstrator of physical phenomena, Wallace Hilton.

Image of Fig. 3.
Fig. 3.

Modern Frahm top designed and built by John A. Daffron.

Image of Fig. 4.
Fig. 4.

The mechanism in Fig. 3 in action, showing resonance.

Image of Fig. 5.
Fig. 5.

A Frahm mechanical resonance apparatus driven by a variable-speed electric drill, designed and built by John A. Daffron.

Image of Fig. 6.
Fig. 6.

The mechanism of Fig. 5 adapted as a string-driver, designed and built by John A. Daffron.

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/content/aapt/journal/tpt/51/6/10.1119/1.4818375
2013-09-01
2014-04-25
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: The Frahm Resonance Apparatus: Variations on a Theme
http://aip.metastore.ingenta.com/content/aapt/journal/tpt/51/6/10.1119/1.4818375
10.1119/1.4818375
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