‘Zero-gravity’ physics—the spacelab project

摘要: Abstract The removal of the constraint gravity opens door to study a wide range effects that are difficult observe in terrestrial laboratory. This applies particularly fluids which, for example, convection due density gradients and segregation solid particles, immiscible liquid droplets or bubbles no longer present. such phenomena is not limited academic interest but great importance modern technology which can benefit two ways. Firstly it may be possible produce new materials, improved materials cannot made high quality on Earth because gravity, as better vaccines through electrophoretic separation, large single crystals semiconductors perfection novel alloys composite materials. Secondly, experiments under reduced will help improve design Earth-based processes by providing data unobtainable Earth, thermal conductivity o...