About: http://webisa.webdatacommons.org/370791886

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Low humidity can cause all kinds of figuring difficulties due to evaporative cooling effects on the exposed portions of the mirror and lap, especially during long, overhanging parabolizing strokes.
http://www.w3.org/ns/prov#wasQuotedFrom	umich.edu