TonyT Posted December 19, 2022 Share Posted December 19, 2022 Thermal camera does work, at least the expensive ones show this detail. Link to comment Share on other sites More sharing options...
Gone West Posted December 20, 2022 Share Posted December 20, 2022 16 hours ago, pocster said: It’s an invention that needs to be done . Would a *super* sensitive thermal camera be able to differentiate between say a sheet of osb with / without timber baton ? . There must be some minuscule temperature difference. When I looked at buying my present house I hired a Protimeter Surveymaster which uses FM radio waves to detect damp under the wall surface. I haven't a clue as to how it works but it could be a basis for detecting different materials. 1 Link to comment Share on other sites More sharing options...
ToughButterCup Posted December 20, 2022 Share Posted December 20, 2022 15 hours ago, Radian said: .... The trick might be to put a fan heater blowing on the surface for a while, then look at the IR as it cools back down to the original temperature. ... Going to give that a go this morning. I'll post the pics later. What a sad old git I've become. Link to comment Share on other sites More sharing options...
Radian Posted December 20, 2022 Author Share Posted December 20, 2022 15 minutes ago, Gone West said: When I looked at buying my present house I hired a Protimeter Surveymaster which uses FM radio waves to detect damp under the wall surface. I haven't a clue as to how it works but it could be a basis for detecting different materials. RF moisture meters utilise the relatively high dielectric of water to most building materials. This results in radio signals being absorbed differentially so measuring the power loss gives an indication of moisture content. It won't be sufficiently sensitive to distinguish between different materials unless one has a higher moisture content than the other. Terrahertz waves, on the other hand, are beginning to be used for portable radar imaging. Give it a few years and they'll probably start appearing on the domestic market. 1 Link to comment Share on other sites More sharing options...
SteamyTea Posted December 20, 2022 Share Posted December 20, 2022 7 minutes ago, Radian said: Terrahertz waves They use them in airports to look at my todger. Link to comment Share on other sites More sharing options...
dpmiller Posted December 20, 2022 Share Posted December 20, 2022 Walabot uses this kind of tech, an array of antennas Link to comment Share on other sites More sharing options...
Radian Posted December 20, 2022 Author Share Posted December 20, 2022 39 minutes ago, dpmiller said: Walabot uses this kind of tech, an array of antennas The beamforming antennas are part of radar in general but while Walabot is ultrawideband, operating from 3gHz to 10gHz, the Terahertz frequency range is generally considered to start at 0.3 THz which is 300gHz and up. We're not quite there yet with something handheld but it's no doubt coming. Link to comment Share on other sites More sharing options...
markc Posted December 20, 2022 Share Posted December 20, 2022 Just need a Tricorder .. (Trekkies know what I mean) .. couple of buttons and a few flashing leds but somehow it displays anything in great detail. Link to comment Share on other sites More sharing options...
Onoff Posted December 20, 2022 Share Posted December 20, 2022 1 hour ago, markc said: Just need a Tricorder .. (Trekkies know what I mean) .. couple of buttons and a few flashing leds but somehow it displays anything in great detail. Please! It's TREKKERS! 1 Link to comment Share on other sites More sharing options...
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