In color theory, a purple is defined as any non-spectral color between violet and red (excluding violet and red themselves). The spectral colors violet and indigo are not purples according to color theory, but they are purples according to common English usage since they are between red and blue.
Apex Learning was started in 1997 by Microsoft co-founder Paul Allen on the idea that online courses and test prep, which were already succeeding in higher education, could be applied to K-12.
Description (Brief). This production prototype for the Adamas model of guitars was made by Ovation Instruments Inc., a subsidiary of Kaman Corporation in Bloomfield, Connecticut, around 1973-1974. The Kaman Corporation, founded by Charles Kaman, had great success in aerospace engineering.