Brittin and Gamow have used quantum theory to predict that sunlight lowers the entropy level at the earth's surface, apparently contrary to the second law of thermodynamics. We have found that this requires new physics to explain it. Another little known property of light, is that it makes it possible to detect magnetic monopoles. We present evidence, from the scientific literature, that magnetic monopoles have already been observed at low energies, but they are non-objective, possibly in another space-time, and have been ignored. Several experimentalists have shown that \textit{magnetic monopoles only exist in the presence of intense illumination} and so do not seem to exist in their own right. Mikhailov made repeated measurements and determined that the monopole charge is quantized as predicted by Dirac ($g=ng_D, n$=1-5); ($\bar{g}$ = (0.99 $\pm$ 0.05)$g_D$). These results are reproducible, and so should be considered physically real. We conclude that Dirac monopoles exist, however not in 4-D, but in another space-time. In the second part we bring together two theories to explain how light can switch (via the Brittin and Gamow effect) into another space-time predicted by chronometric invariant general relativity (CIGR), to reveal phenomena there. Light lowers the entropy level and so reverses the arrow of time into the mirror world of CIGR, where time is directed from the future to the past, and \textit{reveals} monopoles there. We call this the photo-mirror effect. This explains the infinite length of Dirac's string. These results are preliminary evidence for unification.

v3: 19 pages: Revised argument in Section IIIB - results unchanged, References added. v2: 18 pages. Several changes (title amended, abstract, introduction, equation (7) and some references added.)