Vibrational Astrology is evidence based Astrology and it was developed by David Cochrane. His student Linda Berry has transcribed and amplified the material in his lecture notes to provide an extended discussion of Aspects and their meanings in several harmonics. The Harmonics are simply condensed pictures of parts of the basic astrology chart focusing on some particular set of aspects like oppositions/squares/semi-squares/sesquisquares or trines/sextiles/noviles. This book enables you to study the Astrology Chart in greater depth giving you a greater insight into the patterns in the Astrology chart.