Particles were coming out of the lithium, hitting the screen, and producing scintillations. They looked like stars suddenly appearing and disappearing.
We know that if supersymmetric particles exist, they must be very heavy; otherwise we would have spotted them by now.
An electron is no more (and no less) hypothetical than a star. Nowadays we count electrons one by one in a Geiger counter, as we count the stars one by one on a photographic plate.
Dark matter is particularly intriguing because it's some kind of particle - that's for sure.
The particular features of the photographic method of detecting atomic particles enabled us to establish the existence of transient forms of matter which had escaped recognition by other methods.
I was much involved in the development of the spark chamber as a practical research tool.
By the grace of AEC, BNL, God, Green and Hayworth (alphabetical order), we should see neutrinos.
Many applications of the coincidence method will therefore be found in the large field of nuclear physics, and we can say without exaggeration that the method is one of the essential tools of the modern nuclear physicist.
The postdoc explained to me how to distinguish different sorts of particles on the basis of the amounts of energy they deposited in various sorts of detectors, spark chambers, calorimeters, what have you.
Rossi was the first to describe another system working with valves in parallel; it has the advantage that it can easily be extended to coincidences between more than two events, and is therefore predominantly used today.
A neutrino comes into a detector, and most of the time, you don't see it. But very, very seldom, it will satisfy your curiosity and interact.
The application of a strong magnetic field enables the measurement of the energy of the most penetrating particles to be carried out, and the method may be capable of still further extension and improvement.
Simultaneous recording with superimposed ionization chambers and Wilson chambers, ionization chambers and sets of counting tubes, has not yet been carried out.
