Great inventions in the 21st century by Mauricio Enrique Ayala Carvajal https://padlet.com/mauricioayala1/j0bugvad41da92cf Bone conduction headphones. en-us 2023-02-25 14:43:59 UTC 2023-02-27 18:43:25 UTC hello@padlet.com https://padlet.net/icons/png/1f4cc.png 1. Brief history of hearing aids mauricioayala1 https://padlet.com/mauricioayala1/j0bugvad41da92cf/wish/2494795247 The first "official" mention of hearing aids appears in a book published in 1588, titled Natural Magick.]]> 2023-02-25 15:06:46 UTC https://padlet.com/mauricioayala1/j0bugvad41da92cf/wish/2494795247 2. In the 17th and 18th centuries. mauricioayala1 https://padlet.com/mauricioayala1/j0bugvad41da92cf/wish/2494804986 2023-02-25 15:25:23 UTC https://padlet.com/mauricioayala1/j0bugvad41da92cf/wish/2494804986 3. mauricioayala1 https://padlet.com/mauricioayala1/j0bugvad41da92cf/wish/2494806403 In the 17th century, "bone conduction" was discovered.]]> 2023-02-25 15:27:35 UTC https://padlet.com/mauricioayala1/j0bugvad41da92cf/wish/2494806403 4. XIX century mauricioayala1 https://padlet.com/mauricioayala1/j0bugvad41da92cf/wish/2494808713 Efforts to hide hearing aids began during the 19th century.]]> 2023-02-25 15:32:40 UTC https://padlet.com/mauricioayala1/j0bugvad41da92cf/wish/2494808713 5. Twentieth century mauricioayala1 https://padlet.com/mauricioayala1/j0bugvad41da92cf/wish/2494810706 "new generation" of hearing aids]]> 2023-02-25 15:37:16 UTC https://padlet.com/mauricioayala1/j0bugvad41da92cf/wish/2494810706 6. 1994: Bone Conduction Headphones mauricioayala1 https://padlet.com/mauricioayala1/j0bugvad41da92cf/wish/2494813592 sound pathway other than using the ears, ear canal, and eardrum. Werner Bottesch]]> 2023-02-25 15:43:53 UTC https://padlet.com/mauricioayala1/j0bugvad41da92cf/wish/2494813592 mauricioayala1 https://padlet.com/mauricioayala1/j0bugvad41da92cf/wish/2496846481 2023-02-27 18:35:11 UTC https://padlet.com/mauricioayala1/j0bugvad41da92cf/wish/2496846481