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Still as a graduate student, he published five important papers and turned his focus to
the more general problem of uniting quantum mechanics (the laws governing the micro-world of elementary particles) and relativity (the laws governing the macro-world of
planetary and universal gravitation). To this work Dirac brought his engineer’s ability to accept and use approximations when exact calculations were not possible and where exact
measurements did not exist. This talent allowed Dirac to venture into new areas of analysis
whose lack of exact measurements had stopped previous researchers.
Dirac worked mostly in the world of advanced mathematics for these studies. He used
the results of a number of lab studies conducted by other researchers to test and verify his
equations and mathematical models.
Through completion of his doctoral work and through the first five years of his work as
a researcher at Cambridge, Dirac struggled to resolve the apparent incompatibility of these
two major systems of thought and analysis. By 1929 Dirac had realized that his calculatio ?0?&WV?&VBF?B6WfW&?7V&F??2'F?6?W2?BF?W??7BF?B?B?WfW"&VV?FWFV7FVB? ?F??Vv?B?b&Vf?&R????&FW"f?"F?RWVF???2F?B?R?BFWfV??VB?BFW7FVBv??7B?"&W7V?G2F?v?&???V?F?&R6WB?b?Wr'F?6?W2?BF?W??7B?F?W6R?Wr'F?6?W2v?V?B??0?F?R?72?B6???6?F????bF?R???v?'F?6?W2?'WBv?V?B?fRF?R??6?FRV?V7G&?6??6?&vR??&?F??2?B?WWG&??2vW&R???v??F?&26??6?VFVBF?B?VvF?fV?6?&vVB'F?6?W0??bWV?f?V?B?72?W7B?6?W??7B?F?RW??7FV?6R?bF??2?F?&?F????"?F??GFW"?v26??f?&?VB#R?V'2?FW"??6???&??F?&26??6?VFVBF?B?b?V?V7G&??W??7FVB??6?F?fV??B?WWG&??6?&vV@?'F?6?W2?b6???"?72??6?G&???B?WWG&???&W7V7F?fV???W7B?6?W??7B?F?RW??7FV?6P??b?6?G&??2v26??f?&?VBGv??V'2?FW"????3"??WWG&???2vW&R?6?F?fV??FV?F?f?VB???F?R?B??s2?'WBF?V?"?72v2??B6??f?&?VBV?F??v?&?F??R'???W6R&W6V&6?W'2????????F?&2F?W2F?66?fW&VBF?RW??7FV?6R?b?F??GFW"?B&?fVBF?BF?R'F?6?W2vR6??6VR?F?V6???BFV?v?F?&W&W6V?B?????b?bF?R???G2?b'F?6?W2F?B???&?B?W"V??fW'6R???6?F???r?F?&2??fVB66?V?6R6??6W"F??67W&FRf?Wr?bF?R??6?6?v?&?B??gV?f7G3?v?V??GFW"6??fW'G2F?V?W&w??6??R&W6?GVR?2?v?2?VgB?????'B?bF?R?GFW"6?&R6??fW'FVB??F?V?W&w????B6?v?F??F??GFW"?v?V??F??GFW"6???FW2v?F??GFW"?W&6V?B?b&?F??GFW ??B?F??GFW"&R6??fW'FVB??F?W6&?RV?W&w??w&??b?F??GFW ?v?V?B6''?2?V6??FV?F??V?W&w?2?76R6?WGF?RW?FW&???F??26''????&RF?W???&P?F??F?F???????WB???VG2?&??w&??6?V?7?6??VF??b66?V?F?7G2?6V6??BVF?F?????f??V?R????FV??????7F?GWFR?b??6?72V&?6???r???B??FWf??R?V??&WF??VB?F?R??V??&?GV'????2?6??6v??7B???W2&W72?????F?&2?V??F?RvV?W&?F?V?'??b&V?F?f?G???Wr??&??????v??W?b6??2???R??( N( N( B?F?R&??6??W2?bV?GV??V6???72????F???6?'&?FvRV??fW'6?G?&W72??????