Charged particles passing through the silicon create electric signals that exactly indicate which strips the particles have crossed. As the particles pass through many layers of silicon, physicists obtain information on the directions the particles travel. In future detectors, instead of using strips, physicists hope to use silicon pixels with a much smaller area. This will increase the precision for determining particle tracks. Photography Today, this technique is rarely used in high energy physics.
Charged particles leave marks as they cross photographic plates.
The famous physicist Roentgen, for example, discovered X-rays using a photographic plate. In 1950, C.F. Powell received the Nobel Prize for the photographic method of studying nuclear processes . In the 1960s and 1970s, bubble chamber technology led to the discovery of many new elementary particles. Filled with a superheated liquid, the bubble chamber creates a track of small bubbles when a charged particle crosses the chamber, locally bringing the liquid to boil. In 1960, D.A. Glaser received a Nobel Prize for the invention of the bubble chamber, and in 1967, the Nobel Prize Committee honored L.W. Alvarez for the improved hydrogen bubble chamber .