The Lower Thermosphere–Ionosphere (LTI) is the interface region between the Earth’s atmosphere and space. It is modulated by the energy and momentum deposition from the magnetosphere above and by the impacting waves from the lower atmosphere. The LTI region is defined by the co-existence and interaction of neutral and ionized species within the region’s electric and magnetic fields. This interplay results in unique and complex...

The rise of purple glazed pottery in fifteenth-century England represented a major change in the character of domestic material culture. These wares typically evolved from the orange bodied, green glazed pottery of the later medieval period and were produced by a number of centres. This paper examines the technological advancements made by potters working at West Cowick (East Yorkshire) as they navigated the transition from gr...