<html xmlns="http://www.w3.org/1999/xhtml" xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office"><head><!--[if gte mso 9]><xml><o:OfficeDocumentSettings><o:AllowPNG/><o:PixelsPerInch>96</o:PixelsPerInch></o:OfficeDocumentSettings></xml><![endif]--></head><body><div class="ydpf6a820deyahoo-style-wrap" style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:16px;"><div></div>
<div dir="ltr" data-setdir="false">One of the links in the Len's original link has some thoughts to ponder about restoring museum artifacts.</div><div dir="ltr" data-setdir="false">Read the paragraphs in the section:<span><h2>Overcoming the “inherent vice” of Bardeen’s music box</h2></span><div><br></div><div dir="ltr" data-setdir="false"><a href="https://spectrum.ieee.org/transistor-music-box" rel="nofollow" target="_blank" class="enhancr_card_2055640379">John Bardeen’s Terrific Transistorized Music Box</a></div><div><br></div><div id="ydpe7648aa3enhancr_card_2055640379" class="ydpe7648aa3yahoo-link-enhancr-card ydpe7648aa3ymail-preserve-class ydpe7648aa3ymail-preserve-style" style="max-width:400px;font-family:YahooSans, Helvetica Neue, Segoe UI, Helvetica, Arial, sans-serif" data-url="https://spectrum.ieee.org/transistor-music-box" data-type="YENHANCER" data-size="MEDIUM" contenteditable="false"><a href="https://spectrum.ieee.org/transistor-music-box" style="text-decoration-line: none !important; text-decoration-style: solid !important; text-decoration-color: currentcolor !important; color: rgb(0, 0, 0) !important;" class="ydpe7648aa3yahoo-enhancr-cardlink" rel="nofollow" target="_blank"><table class="ydpe7648aa3card-wrapper ydpe7648aa3yahoo-ignore-table" style="max-width:400px" cellspacing="0" cellpadding="0" border="0"><tbody><tr><td width="400"><table class="ydpe7648aa3card ydpe7648aa3yahoo-ignore-table" style="max-width:400px;border-width:1px;border-style:solid;border-color:rgb(224, 228, 233);border-radius:2px" width="100%" cellspacing="0" cellpadding="0" border="0"><tbody><tr><td class="ydpe7648aa3card-primary-image-cell" style="background-color: rgb(0, 0, 0); background-repeat: no-repeat; background-size: cover; position: relative; border-radius: 2px 2px 0px 0px; min-height: 175px;" valign="top" height="175" bgcolor="#000000" background="https://s.yimg.com/lo/api/res/1.2/.NzL4ZrKBar8AX5qDSexsw--~A/Zmk9ZmlsbDt3PTQwMDtoPTIwMDthcHBpZD1pZXh0cmFjdA--/https://spectrum.ieee.org/media-library/a-small-electronic-gadget-encased-in-clear-plastic-has-a-speaker-and-some-buttons.jpg?id=32095829&width=1200&height=600&coordinates=0%2C326%2C0%2C326.cf.jpg"><!--[if gte mso 9]><v:rect fill="true" stroke="false" style="width:396px;height:175px;position:absolute;top:0;left:0;"><v:fill type="frame" color="#000000" src="https://s.yimg.com/lo/api/res/1.2/.NzL4ZrKBar8AX5qDSexsw--~A/Zmk9ZmlsbDt3PTQwMDtoPTIwMDthcHBpZD1pZXh0cmFjdA--/https://spectrum.ieee.org/media-library/a-small-electronic-gadget-encased-in-clear-plastic-has-a-speaker-and-some-buttons.jpg?id=32095829&width=1200&height=600&coordinates=0%2C326%2C0%2C326.cf.jpg"/></v:rect><![endif]--><table class="ydpe7648aa3card-overlay-container-table ydpe7648aa3yahoo-ignore-table" style="width:100%" cellspacing="0" cellpadding="0" border="0"><tbody><tr><td class="ydpe7648aa3card-overlay-cell" style="background-color: transparent; border-radius: 2px 2px 0px 0px; min-height: 175px;" valign="top" bgcolor="transparent" background="https://s.yimg.com/cv/ae/nq/storm/assets/enhancrV21/1/enhancr_gradient-400x175.png"><!--[if gte mso 9]><v:rect fill="true" stroke="false" style="width:396px;height:175px;position:absolute;top:-18px;left:0;"><v:fill type="pattern" color="#000000" src="https://s.yimg.com/cv/ae/nq/storm/assets/enhancrV21/1/enhancr_gradient-400x175.png"/><v:textbox inset="0,0,20px,0"><![endif]--><table class="ydpe7648aa3yahoo-ignore-table" style="width: 100%; min-height: 175px;" height="175" border="0"><tbody><tr><td class="ydpe7648aa3card-richInfo2" style="text-align:left;padding:15px 0 0 15px;vertical-align:top"></td><td class="ydpe7648aa3card-actions" style="text-align:right;padding:15px 15px 0 0;vertical-align:top"><div class="ydpe7648aa3card-share-container"></div></td></tr></tbody></table><!--[if gte mso 9]></v:textbox></v:rect><![endif]--></td></tr></tbody></table></td></tr><tr><td><table class="ydpe7648aa3card-info ydpe7648aa3yahoo-ignore-table" style="background-color: rgb(255, 255, 255); background-repeat: repeat; background-attachment: scroll; background-image: none; background-size: auto; position: relative; z-index: 2; width: 100%; max-width: 400px; border-radius: 0px 0px 2px 2px; border-top: 1px solid rgb(224, 228, 233);" cellspacing="0" cellpadding="0" border="0" align="center"><tbody><tr><td style="background-color:#ffffff;padding:16px 0 16px 12px;vertical-align:top;border-radius:0 0 0 2px"></td><td style="vertical-align:middle;padding:12px 24px 16px 12px;width:99%;font-family:YahooSans, Helvetica Neue, Segoe UI, Helvetica, Arial, sans-serif;border-radius:0 0 2px 0"><h2 class="ydpe7648aa3card-title" style="font-size: 14px; line-height: 19px; margin: 0px 0px 6px; font-family: YahooSans, Helvetica Neue, Segoe UI, Helvetica, Arial, sans-serif; color: rgb(29, 34, 40); max-width: 314px;">John Bardeen’s Terrific Transistorized Music Box</h2><p class="ydpe7648aa3card-description" style="font-size: 12px; line-height: 16px; margin: 0px; color: rgb(151, 158, 168);">In 1949 an engineer at Bell Labs built three music boxes that could electronically produce five distinct notes. ...</p></td></tr></tbody></table></td></tr></tbody></table></td></tr></tbody></table></a></div></div><div dir="ltr" data-setdir="false"><div><br></div><div dir="ltr" data-setdir="false">Dave Crowell<br></div><div><br></div><div><br></div></div><div><br></div>
</div><div id="ydpa164788byahoo_quoted_1701241009" class="ydpa164788byahoo_quoted">
<div style="font-family:'Helvetica Neue', Helvetica, Arial, sans-serif;font-size:13px;color:#26282a;">
<div>
On Wednesday, December 14, 2022 at 06:10:17 PM EST, Len Arzoomanian via Thursday <thursday@newsm.org> wrote:
</div>
<div><br></div>
<div><br></div>
<div><div dir="ltr">Some IEEE articles on the development of the Transistor. I like the fact that the inventors didn’t really understand how the point contact worked. Kind of like how a cats whisker becomes a diode when it touches a galena. It’s all magic!<br></div><div dir="ltr"><br></div><div dir="ltr">Len<br></div><div dir="ltr"><br></div><div dir="ltr"><a href="https://spectrum.ieee.org/special-reports/the-transistor-at-75/" rel="nofollow" target="_blank">https://spectrum.ieee.org/special-reports/the-transistor-at-75/</a><br></div><div dir="ltr"><br></div><div dir="ltr"><br></div><div dir="ltr">Sent using the mobile mail app<br></div><div dir="ltr"><br></div><div dir="ltr">_______________________________________________<br></div><div dir="ltr">Thursday mailing list<br></div><div dir="ltr"><a href="mailto:Thursday@newsm.org" rel="nofollow" target="_blank">Thursday@newsm.org</a><br></div><div dir="ltr"><a href="http://newsm.org/mailman/listinfo/thursday_newsm.org" rel="nofollow" target="_blank">http://newsm.org/mailman/listinfo/thursday_newsm.org</a><br></div></div>
</div>
</div></body></html>