Mon Prof Augmenté
Steady Image Fades
Age 15 · Psychology
Your eyes respond most strongly when something changes. If an image stays completely still on the retina, it can gradually disappear from what you notice.
This picture is part of the full library
Every lesson is open to everyone for 7 days after it is published. This one came out on October 5, 2026: its text stays readable here, and its picture opens with a subscription.
The app is free. A subscription opens every lesson, in every school year.
Age 15: open this week
Browse Age 15
In the picture
- The eye: the organ that receives light
- The blue disc: a steady colored area on a white surface
- The red center dot: a small fixed detail within the blue disc
- The red dot on the white surface: the same small fixed detail after the blue area has faded
Examples
- Staring at a spot on a wall until the surrounding color seems to vanish.
- Not noticing a smudge on glasses while reading.
Key takeaways
- The visual system reports change more than steady input.
- A perfectly steady image on the retina can fade from awareness.
Quiz: Steady Image Fades (Age 15)
-
What does the visual system report more than steady input?
-
What can happen to a perfectly steady image on the retina?
-
According to the card, when do your eyes respond most strongly?
The answers, each with its explanation, are in the app. This lesson has left the free week, so its quiz is part of the subscription.
Free app, optional subscription
App Store Google Play
Carry on in the app
At least one new illustrated lesson every weekday for your child’s year, with its quiz and a reminder at 6:15 pm.
Your child’s teacher does not use My Enhanced Teacher yet?
Tell them about it
