Despite the headline, this isn't really a story about superconductivity—at least not the superconductivity that people care about, the stuff that doesn't require exotic refrigeration to work. Instead, it's a story about how superconductivity can be used as a test of some of the weirder consequences of quantum mechanics, one that involves non-existent particles of light that still act as if they exist.
В российском городе дерево рухнуло на жилой дом20:51
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Раскрыта новая задумка Трампа против Ирана14:57
With five cells per row, we’ll need to dedicate five sprites to the cells’ drop shadows. We will reuse those cells in each subsequent row, and if a shadow needs to go missing (because the corresponding button is depressed), we will simply disable that sprite on that row via the $D015 register. Two sprites will suffice for the corner sprites; the top corners may be similarly re-used for the bottom ones. That leaves one sprite spare, and it seems like it would be most conveniently used for the rest of the left-side shadow.