Naomi Mitchison, in her autobiographic e-book "You may question", relates an encounter throughout a going for walks tour in Sweden: "About in Gotland I walked once more, further than I might have if I'd understood the milestones were being in old Swedish miles, to ensure my disappointing a few-mile walk alongside the chilly sea edge beneath the str… Read More

Frequency describes the transmission of electromagnetic waves from a detector. Given that gold is an extremely low conductivity metal, larger frequency transmitters with shorter wavelengths do a far better position at spotting it. Most detectors can have 1 frequency that they're capable to transmit, while some have a range. We looked for detectors … Read More