Til salg: En flot og velholdt bog af Poul Henningsen, "Om Lys". Bogen indeholder en detaljeret beskrivelse af Poul Henningsens arbejde med belysning, med illustrationer af hans ikoniske lampedesigns. Et must-have for designentusiaster og samlere. OUT OF PRINT ! Very Rare ! PRINTED BY RHODOS. All light theories, reports,  communications, letters, experiments of PH guru of light innovation. Original  price exceeds 1000 dkk....Lots of Pictures, models, physics calculations, Full of detail. Hours of indeph analysis into the indirect light reflexion theory of 1927 that made this lamp an ICON and a break trough in a school renowned today 2025...What a journey ! A must for every PH5 enthusiast.  In Danish Language.