Charles William Johnson

1943

• Ancient numerology (Essays from Earth/matriX : science in ancient artwork)
• Numbers and cycles in ancient astronomy (Essays from Earth/matriX : science in ancient artwork)
• Pi, the reciprocal of seven and trigono/metrix (Essays from Earth/matriX : science in ancient artwork)
• Reckoning time: Ancient day-counts (Essays from Earth/matriX : science in ancient artwork)
• The anti-radian (Earth/matriX : science in ancient artwork)