ChromaDepth 3-D was invented by US researcher Richard Steenblik after he noticed that the bright colors on the screen of a TEMPEST video game seemed to lie in different depth planes.
kɹˈoʊmə dˈɛpθ θɹˈiːdˈiː wʌz ɪnvˈɛntᵻd baɪ jˌuːˈɛs ɹᵻsˈɜːtʃɚ ɹˈɪtʃɚd stˈiːnblɪk ˈæftɚ hiː nˈoʊɾɪst ðætðə bɹˈaɪt kˈʌlɚz ɔnðə skɹˈiːn əvə tˈɛmpɪst vˈɪdɪoʊ ɡˈeɪm sˈiːmd tə lˈaɪ ɪn dˈɪfɹənt dˈɛpθ plˈeɪnz.