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.
The origins of the Climax are credited to Charles Darwin Scott who worked at sawmills located in Spartansburg, Pennsylvania. Around 1878 he began experimenting with his geared-locomotive design that could be put to practical use in logging applications, similar to the Shay which was first sold in 1880.