Stråling og ledningsevne: let varme (solskoldning ved sydpolen) og mørk varme (i miner stiger temperaturen med 1 grad pr. 30 meter). Anonym illustration fra 1925. Privat samling.(Radiation and conductibility: light heat (sunburn at the South pole) and dark heat (in mines the temperature rises by 1 degree per 30 metres). Anonymous illustration from 1925. Private collection.)Anonymous Anonymous |
| € 133.36
Inklusive 25% moms |
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1925 · Engraving
· Billed-ID: 918743
Private Collection / Bridgeman Images |
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