https://arab.news/be7n3
Author: Oleg Grabar
Based on universal motifs, ornamentation occurs in many artistic traditions, though it reaches its most expressive, tangible, and unique form in the art of the Islamic world.
“The Mediation of Ornament” shares a veteran art historian’s love for the sheer sensuality of Islamic ornamentation, but also uses this art to show how ornament serves as a consistent intermediary between viewers and artistic works from all cultures and periods.
General relativity has entered a new phase of its development as technical advances have led to the direct detection of gravitational radiation from the merging of single pairs of stellar-sized black holes.
The exquisite sensitivity of pulsar signal timing measurements has also been exploited to reveal the presence of a background of gravitational waves, most likely arising from the mergers of supermassive black holes thought to be present at the center of most galaxies.
This book demonstrates how general relativity is central to understanding these and other observations.
