User contributions for Cornish semiconductor

15:4815:48, 21 June 2026 diff hist +106 Finding your own semiconductors →Safety
15:4615:46, 21 June 2026 diff hist +1,441 Finding your own semiconductors →Safety
15:3515:35, 21 June 2026 diff hist +246 Finding your own semiconductors →What to look for
15:2615:26, 21 June 2026 diff hist +462 Finding your own semiconductors →What to look for
15:2115:21, 21 June 2026 diff hist +355 Finding your own semiconductors →What to look for
15:1915:19, 21 June 2026 diff hist +1 List of minerals tested No edit summary
15:1915:19, 21 June 2026 diff hist +17 List of minerals tested No edit summary
15:1615:16, 21 June 2026 diff hist +300 Finding your own semiconductors →What to look for
15:1415:14, 21 June 2026 diff hist +341 Finding your own semiconductors No edit summary
15:1015:10, 21 June 2026 diff hist +528 Finding your own semiconductors No edit summary
15:0615:06, 21 June 2026 diff hist +811 Finding your own semiconductors No edit summary
14:5714:57, 21 June 2026 diff hist 0 N File:Cut-s.jpg No edit summary current
14:5414:54, 21 June 2026 diff hist +32 List of minerals tested No edit summary
14:5414:54, 21 June 2026 diff hist +50 N Finding your own semiconductors Created page with "=How to find semiconductors in Cornish mine waste="
14:5314:53, 21 June 2026 diff hist +50 Natural semiconductors →Natural vs factory grown semiconductors
14:5014:50, 21 June 2026 diff hist +273 List of minerals tested No edit summary
14:4014:40, 21 June 2026 diff hist −1 Galena No edit summary
14:3914:39, 21 June 2026 diff hist +1 Pyrite No edit summary
14:3914:39, 21 June 2026 diff hist +190 Pyrite No edit summary
14:3714:37, 21 June 2026 diff hist +759 N Galena Created page with "* Lustre:Metallic, Sub-Metallic, Dull * Transparency:Opaque * Colour:Lead-grey * Streak:Lead-grey * Hardness:2½ on Mohs scale * Tenacity:Brittle * Cleavage:Perfect {001} * Parting:{111} * Fracture:Sub-Conchoidal [https://www.mindat.org/min-1641.html Data from mindat.org]] The "OG" semiconducting mineral from the early days of radio, galena was chosen as it was the best material for converting radio frequencies into audible signals, by removin..."
14:3114:31, 21 June 2026 diff hist 0 Pyrite No edit summary
14:3114:31, 21 June 2026 diff hist +12 Pyrite No edit summary
14:3114:31, 21 June 2026 diff hist +500 N Pyrite Created page with "* Lustre:Metallic * Transparency:Opaque * Colour:Pale brass-yellow * Streak:Greenish-black * Hardness:6 - 6½ on Mohs scale * Tenacity:Brittle * Cleavage:Poor/Indistinct Indistinct on {001}. * Fracture:Irregular/Uneven, Conchoidal https://www.mindat.org/min-3314.html pyrite page on mindat One of the most common semiconducting minerals, pyrite exhibits high conductivity and easily provides a voltage drop - often in both polarities equally, rectification is harder to..."
14:2714:27, 21 June 2026 diff hist +146 List of minerals tested No edit summary
14:2514:25, 21 June 2026 diff hist +3 List of minerals tested →Pyrite
14:2414:24, 21 June 2026 diff hist +6 Natural semiconductors No edit summary
12:5212:52, 21 June 2026 diff hist 0 Cat's whisker setups No edit summary current
12:5212:52, 21 June 2026 diff hist +96 Cat's whisker setups No edit summary
12:4612:46, 21 June 2026 diff hist +202 Historical cat's whisker designs No edit summary current
11:3911:39, 21 June 2026 diff hist 0 N File:Vertical.jpg No edit summary current
09:1309:13, 21 June 2026 diff hist +178 Historical cat's whisker designs →Historical variants found on ebay listings
09:1109:11, 21 June 2026 diff hist −5 Historical cat's whisker designs No edit summary
09:1109:11, 21 June 2026 diff hist +7 Historical cat's whisker designs No edit summary
09:1009:10, 21 June 2026 diff hist 0 Historical cat's whisker designs No edit summary
09:0909:09, 21 June 2026 diff hist +472 Historical cat's whisker designs No edit summary
09:0109:01, 21 June 2026 diff hist +3,271 Historical cat's whisker designs No edit summary
08:0708:07, 21 June 2026 diff hist 0 N File:Marconi2.webp No edit summary current
08:0608:06, 21 June 2026 diff hist 0 N File:Marconi.webp No edit summary current
08:0508:05, 21 June 2026 diff hist 0 N File:Multi.webp No edit summary current
08:0508:05, 21 June 2026 diff hist 0 N File:ArmType.webp No edit summary current
08:0208:02, 21 June 2026 diff hist 0 N File:Double.jpg No edit summary current
08:0208:02, 21 June 2026 diff hist 0 N File:Horizontal.jpg No edit summary current
07:5007:50, 21 June 2026 diff hist +109 N File:EFD108 Point Contact Germanium Diode.jpg Mister rf, CC BY-SA 4.0 <https://creativecommons.org/licenses/by-sa/4.0>, via Wikimedia Commons current

07:1507:15, 20 June 2026 diff hist +604 N Historical cat's whisker designs Created page with "right Crystal radios from the 1920s are possible to get hold of, but can be quite expensive. This is a collection of photographs and diagrams of crystal/cat's whiskers setups that I've managed to find. The materials used correspond with what was available at the time, glass, metal but also the first plastics, ebonite and bakelite - which would have felt very futuristic in these years. On the right is a diagram of a vertical set up. This..."
07:1107:11, 20 June 2026 diff hist 0 N File:Catswhiskerdiagram.png No edit summary current
06:3706:37, 20 June 2026 diff hist +75 Semiconductor history No edit summary

17:2017:20, 9 June 2026 diff hist +182 Semiconductor history No edit summary

22:0422:04, 8 June 2026 diff hist +31 Semiconductor history No edit summary
22:0222:02, 8 June 2026 diff hist +19 Semiconductor history →Radio sets
22:0122:01, 8 June 2026 diff hist +1,419 Semiconductor history No edit summary

21 June 2026

20 June 2026

9 June 2026

8 June 2026