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Warmtestraling
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# Gegevens
sigma <-
oppervlakte <-
temperatuur_celcius <-
kledij <- c("Katoen", "Wol", "PET", "Polyamide PA", "PET / Katoen mix",
"PET / Wol mix", "Linnen", "Naakte huid",
"Aluminium reddingsdeken")
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