Ray Davis and Blair Munhofen began the experiment at the Homestake gold mine in South Dakota, where they installed a neutrino detector, using 400,000 liters of detergent (chlorine) as the detector, which arrived in 10 rail cars. The cost was $600,000 (or 10 minutes of a TV commercial, as Davis says). The experiment will be inconclusive, also because the theory is not yet complete. The experiment relies on the fact that every second, 66 billion solar neutrinos pass through every square centimeter of the Earth’s surface.
