X-Message-Number: 13728 From: Date: Mon, 15 May 2000 05:30:25 EDT Subject: Non X-ray brain reader Brain reading without X-rays. Some dislike everything with a name as x-rays, radiation or nuclear, so is there an "ecological" version of the brain reader? I'll try to answer that question here, my main objective is to identify an alternative issue if some key componment in the x-ray system was unworkable or too difficult to master. My proposal is the correlated ligth photon with giant tunnel effect. The basic idea is to work with visible spectrum ligth where each photon has only 3 eV energy and no ionizing power. Quantum nondemolition is then no more requested. A beam with many correlated photons allows to get the 100 nm resolution. If the brain can be cut in slices one millimeter thick, all is good, the problem is solved. My own feeling is that an information retrivial system must be nondestructive and so must work on brain in a head. The bones are then a problem. The solution would be to use the tunnel effect to overcome that difficulty. The tunnel effect is a quantum process where a wave travel throughout an obstacle if this one is no more than some wavelengths thick. In a quantum wave packet, three lengths must be taken into account: 1/ the wavelength L1. 2/ the domain where the wave amplitude of the packet is significant L2. L2 is 10 to 100 times larger than L1. 3/ the wave packet L3. L3 is very large, For one foot to many miles. In the optical domain, L1 is half a micrometer, L2 is near 10 micrometers and L3 is 30 centimeters in the Sun ligth and more than 100 m in some lasers. In the tunnel process, the maximum amplitude of the wave is pushed off center in L2 and so the photon maximum likehood presence probability is displaced. This process can't go beyond L2 because here the wave has a near zero presence probability. Now, if the waves travel in a dispersive medium, a milk-like matter, the maximum amplitude in L2 goes down and L2 gets larger. Because photons are spin 1 particles, they obey the Bose Einstein statistics and tend to condensate in the same quantum state. This produces a bunching effect. If L2 becomes larger with no well deffined maximum amplitude, there is no more photon preffered localization and so no bunching possibility. This is called a unbunching quantum state. Unbunched photons can tunnel to longuer distance because L2 is larger for them. With very fast systems, L2 can be cut, the head is then sent along a path and the tail along another. In the end, both are recombined into a single wave packet. If the head componment is sent throughout a loop where there is a dispersive and a tunnel element, that part will move farther and farther towards the head of L3. When the wave packet is assembled anew, there are two separate L2 domains, may be many centimeter or meters away. Newerthless, both are in the same wave packet L3 and a tunnel effect is possible between them. Such a ligth could travel throughout a brick wall. The brain case is then no more a problem. Yvan Bozzonetti. Rate This Message: http://www.cryonet.org/cgi-bin/rate.cgi?msg=13728