Abstract: A system is provided whereby sought-for and available individuals or things are matched by the internet or other computer networks. This is achieved by posting a standardized form called a “profile” to the network, where the profile describes and characterizes the individual or thing which is sought for or is available. The profiles are then processed electronically to find matches. Close matches are reported to the parties involved, and if desired a channel of communication is set up. The procedure may be conducted anonymously or publicly, and in a simple version of the public procedure may be thought of as an “internet classified ad”. Advantages of the system are the unprecedented scope of the search procedure allowed by the scale of the internet; and, further when individuals are concerned, the overcoming of barriers related to shyness or confidentiality allowed by the anonymity of the process.

Abstract: Neutrinos are detected by allowing them to scatter on nuclei contained in a detector and by detecting the recoil of the nuclei. Because the probability of a neutrino being scattered is very low the probability is very high that a neutrino will only cause recoil of a single nucleus. On the other hand background radiation is likely to cause the recoil of a large number of electrons and/or nuclei so that neutrino scattering can be detected by distinguishing between the recoil of a single nucleus and the simultaneous recoil of a plurality of electrons/nuclei. In one form of the detector the nuclei are present as minute superconducting metal grains which are held in the superconducting state. At low temperatures the grains have a very low specific heat and the scattering of a neutrino will cause a single grain to heat up and change from the superconducting to the normal conducting state.