Strange kinetics of heat transfer

"Anomalous" forms of mass diffusion are accepted facts and their understanding occupies a large branch of applied physical science, but violations of Fourier's law of diffusive heat conduction is believed to happen only at the nanoscale. Testing this proposition using a homebuilt setup to map the surface temperature of polymer materials in vacuum, our independent measurements using IR camera, thermocouples and thermochromic liquid crystals find consistent deviations also at the macroscale.