||341. D. A. B. Miller, “On perfect invisibility and cloaking,” OSA Annual Meeting “Frontiers in Optics” 2007, San Jose, CA, Sept. 2007, Paper FThU2
Perfect invisibility even to pulses is possible in principle using sensors and sources
around a volume and a new calculation formula, though would always be challenging for
broadband electromagnetic waves and usually discoverable quantum-mechanically.
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