Artist works are often used to document or commemorate an event or important person. Art can convey both emotion and facts. Wars, troublesome times, and great rulers are often remembered through art
Answer:
It uses light and oddities like a floating head to show that it is not a living person, the head in question looks close to representations of religious figure Jesus. So, we can deduce that the "Apparition" symbolizes something different than just a head with no body.
Explanation: