Hackaday (unofficial) May 10, 2023 12:00pm Clever Optics Make Clock’s Digits Float in Space #clockhacks #ledhacks #airr #clock #holographicdisplay #leddisplay #hackaday posted by pod_feeder_v2 Clever Optics Make Clock’s Digits Float In Space If you’ve never heard of Aerial Imaging by Retro-Reflection, or AIRR for short, you’re probably not the only one. It’s a technique developed by researchers at Utsunomiya Universit…