File:Shell ear trumpet, Europe, Wellcome L0065236.jpg

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Shell ear trumpet, Europe,
Title
Shell ear trumpet, Europe,
Description

This ingenious hearing aid is made out of a whelk shell. These shells are found on beaches across Britain. The vulcanite tip is inserted into the ear canal. The shell acts as a trumpet. It ‘catches’ and amplifies sound to the ear drum. This vibrates and passes the sound to the bones of the middle ear, which are called ossicles. These bones also vibrate and amplify the sound to pass it to the inner ear. The hairs of the bones in the inner ear send a nerve impulse to the brain. The brain translates this into noise. The effectiveness of the shell as a hearing aid is unknown. However, it was a novel and economical response to a common problem.

maker: Unknown maker

Place made: Europe

Wellcome Images
Keywords: ear trumpet; Deafness
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This file comes from Wellcome Images, a website operated by Wellcome Trust, a global charitable foundation based in the United Kingdom. Refer to Wellcome blog post (archive).
This tag does not indicate the copyright status of the attached work. A normal copyright tag is still required. See Commons:Licensing.

References
  • Library reference: Science Museum A602767
  • Photo number: L0065236
Source/Photographer

https://wellcomeimages.org/indexplus/obf_images/5c/5a/f40d17ff89515013d8000a590992.jpg

Licensing[edit]

w:en:Creative Commons
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current00:37, 19 October 2014Thumbnail for version as of 00:37, 19 October 20144,256 × 2,832 (1.3 MB)Fæ (talk | contribs)=={{int:filedesc}}== {{Artwork |artist = |author = |title = Shell ear trumpet, Europe, |description = This ingenious hearing aid is made out of a whelk shell. These shells are found on beaches across Britain....

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