Ghost Appears After Looking at Paper, 1950s

The video explains a visual phenomenon where a ghostly image appears on the wall due to the retina's reaction to light. When the retina becomes tired from constant exposure to white light, it affects the perception of light, leading to the appearance of a ghostly image.

What phenomenon is described when a ghost-like image appears on the wall?

• Peripheral vision

• Color blindness

• Optical illusion

• Retinal fatigue

What causes the retina to become tired?

• Lack of sleep

• Exposure to white light

• Excessive blinking

• Reading in dim light

How does a tired retina affect vision?

• It increases focus

• It enhances color perception

• It reduces the ability to see light

• It improves night vision

What happens to the tired area of the retina when you shift your focus?

• It becomes more sensitive

• It remains unchanged

• It starts to heal immediately

• It struggles to perceive light

Which part of the eye is primarily involved in the ghost image phenomenon?

• Cornea

• Iris

• Lens

• Retina