Simulation of Rutherford's Experiment Carl B. Bishop Clemson Universlty, Clemson, SC 29631 The evolution of our modern atomic theory began in 1803 when John Dalton proposed that matter was composed of small indivisible particles called atoms that combine to make all compounds. After ohservations of cathode ray J. J. Thomnson sueeested in 1898 that atoms are tubes. ~~~, negatively charged particles (electrons) embedded uniformIv in a snhere of oositivelv chareed matter. The concept of
