Project Gutenberg 2012-06-18 Public domain in the USA. 511 Planck, Max 1858 1947 Planck, Max Karl Ernst Ludwig Masius, Morton 1883 14008862 The Theory of Heat Radiation en Electric waves Heat -- Radiation and absorption Gases QC Text Physics Browsing: Science - Physics Browsing: Science - General 1415134 2012-06-18T12:02:48 application/pdf 1047289 2012-06-18T12:02:48 application/pdf application/zip 549146 2021-06-11T17:21:29 application/prs.tex 226243 2021-06-11T17:21:29 application/prs.tex application/zip 10596 2025-06-16T10:00:23.975568 application/rdf+xml 14616 2025-06-16T10:00:23.886596 image/jpeg 3671 2025-06-16T10:00:23.590596 image/jpeg Archives containing the RDF files for *all* our books can be downloaded at https://book.klll.cc/wiki/Gutenberg:Feeds#The_Complete_Project_Gutenberg_Catalog en.wikipedia