214 00:17:51,760 --&amp;gt; 00:17:56,280 known to physicists as the double-slit experiment, 215 00:17:56,280 --&amp;gt; 00:18:02,200 it's remarkable because it reveals two astonishing paradoxes about the nature of reality 216 00:18:02,200 --&amp;gt; 00:18:05,960 that no-one can fully explain.