Dirac In 1929 Paul Dirac managed to combine quantum mechanics and special relativity The energy of a particle can be given by: E2=m,2c4+p2c2 But this equation leaves both a positive and a negative solution E=±Vm,2c4+p2c2 PDF文件使用"pdfFactory”试用版本创建www.fineprint.cnDirac • In 1929 Paul Dirac managed to combine quantum mechanics and special relativity The energy of a particle can be given by: • But this equation leaves both a positive and a negative solution 2 2 4 2 2 E m c p c = o + 2 4 2 2 E m c p c = ± o + PDF 文件使用 "pdfFactory" 试用版本创建 www.fineprint.cn