<prompt> Mugore ra1924, makore mana van der Laan asati abhabhatidza zita renhamba iyi, injiniya wekuFrance Gérard Cordonnier akanga atowana nhamba iyi uye akaitumidza kuti radiant number French: le nombre radiant. Kusiyana nemazita echikamu chendarama uye chikamu chesirivheri, izwi rekuti plastiki rakanga risingadiwi navan der Laan kureva chinhu chakati, asi panzvimbo pezvo muchirevo charo, zvichireva chimwe chinhu chinogona kupihwa matatu-mativi. Izvi, maererano naRichard Knovan, imhaka yekuti zviyero zvePad nhamba, 34 uye 17, zvine chekuita nemiganhu yekuona kwevanhu mune imwe saizi yemuviri.  <response>: Dom Hans van der Laan 