Posts Tagged: "persistence of vision effect"

fanseedigitaltemperaturefan

Fansee Makes Temperature Float In Mid-Air

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The Fansee Digital Temperature Fan is, well, fancy – the name would suggest. But at $29.99 it’s not expensive, although it does go a bit over the top with its persistence of vision LED mid-air display technology. I don’t know how to explain it, but it projects a text reading...