Science can help answer questions relating to how and when an object was made, the history of an object, and its current condition and conservation needs. Studies of this type are crucial to our understanding of Asian material culture and how to preserve it. Research on artworks utilizes methods that are non-invasive, or require only a small sample. Most studies start with a thorough examination of an object using stereomicroscopy and ultraviolet light. Facilities for scientific research include laboratories for wet chemistry, instrumental analysis, microscopy, radiography, and scanning electron microscopy.