Novel experimental apparatus to visualise low-temperature flows

The first laboratory in Europe for the visualisation of liquid helium flows is currently being established at the Charles University in Prague. The use of such a valuable experimental tool for the analysis of cryogenic flows of normal and superfluid 4He is introduced and its specific features discussed. More importantly, it is shown that the newly implemented flow visualisation equipment is potentially capable of obtaining new results, that is, further understanding of the underlying physics.