Recent content by david_nelson

Thank you.

The physics is there; just need someone resourceful to harvest it; maybe through Surface Plasmon Resonance or NMR combined with THz; I'm working on it for few months new, but as a geophysicist, I'm not really into signals and systems that much; but there are many kinds of waves that penetrate...

Thank you. The developments in THz technology are brilliant, and can come close to that kind of Hollywood style, but they are still facing problems with the energy. Backscatter X-Ray is great too, but again energy isn't helping. I'm in geophysics, hence I want to scan large areas, with 100m x...

Thank you, Dave... pleasure being here with all you guys. GPR depends on radar technology; I talked during a conference in London, UK with the technical guys making some European GPR products, and they assured me that the wavelength of the GPR won't be helpful even at 5-meter depth; it will give...

Thank you. We are doing geophysical research in Jordan, so it's fair to assume dry arid hot environment, which is not the case during winter of course, but the majority of the country is so. We might find reddish, brownish, or white sands/rocks at various layers: clay, loam, phosphate...etc...

Thank you.

Hello, I'm wondering about the best EM to penetrate deep into ground and sense/detect what's there. The authors here (https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/2005JE002528) are recommending P-band with 430 MHz to probe few meters into the ground of Mars; that's about 70-cm...

Hello; I am a geophysicist; I do field explorations in the Middle East; originally from Indiana, US. Cheers; Dave