<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto">Interesting Wireless History<div><br></div><div>Len<br><br><div dir="ltr">Sent from my iPhone</div><div dir="ltr"><br>Begin forwarded message:<br><br></div><blockquote type="cite"><div dir="ltr"><b>From:</b> Bill Burns <billb@ftldesign.com><br><b>Date:</b> August 1, 2022 at 3:15:05 PM EDT<br><b>To:</b> Wireless-History@groups.io<br><b>Subject:</b> <b>Re: [Wireless-History] Origin of "Barretter"</b><br><b>Reply-To:</b> Wireless-History@groups.io<br><br></div></blockquote><blockquote type="cite"><div dir="ltr"><span>The origin of the word is mentioned in The Electrical Journal, Vol.51, p.1043. 16 October 1903: "Fessenden's Work in Wireless Telegraphy".</span><br><span></span><br><span>https://books.google.com/books?id=Nrv8nIu2MbQC&pg=PA1043</span><br><span></span><br><span>Snippet of the article is attached.</span><br><span></span><br><span>"The most important of another budget of patents recently issued to Prof. Fessenden is one covering a modification of the hot-wire instrument called by the inventor a "barretter," from the old French word "barretor," "exchanger," from its property of exchanging a given amount of high-frequency energy for continuous current energy, the latter form being easier to manage."</span><br><span></span><br><span>Patents referred to in the article:</span><br><span></span><br><span>https://en.wikipedia.org/wiki/Hot-wire_barretter</span><br><span></span><br><span>https://en.wikipedia.org/wiki/Electrolytic_detector</span><br><span></span><br><span>--</span><br><span>Bill</span><br><span></span><br><span></span><br><span>On 01-Aug-22 1:37 PM, WB2UAQ wrote:</span><br><blockquote type="cite"><span>I did a little research looking for the origin of the name given to a temperature sensitive resistor, the*barretter*. I have not found much. Does anyone know where that term came from? Maybe it was a term used in chemistry.</span><br></blockquote><blockquote type="cite"><span>Thanks,</span><br></blockquote><blockquote type="cite"><span>Pete</span><br></blockquote><span></span><br><span></span><br><span>-=-=-=-=-=-=-=-=-=-=-=-</span><br><span>Groups.io Links: You receive all messages sent to this group.</span><br><span>View/Reply Online (#1741): https://groups.io/g/Wireless-History/message/1741</span><br><span>Mute This Topic: https://groups.io/mt/92753850/2101390</span><br><span>Group Owner: Wireless-History+owner@groups.io</span><br><span>Unsubscribe: https://groups.io/g/Wireless-History/leave/9171242/2101390/1308068442/xyzzy [arzoo623@webrightservices.net]</span><br><span>-=-=-=-=-=-=-=-=-=-=-=-</span><br><span></span><br><span></span><br><img id="81D6E8E8-E2A2-4085-BA9D-91923293A13D" alt="Fessenden Barretter.jpg" src="cid:81D6E8E8-E2A2-4085-BA9D-91923293A13D"></div></blockquote></div></body></html>