NTNUJAVA Virtual Physics Laboratory
Enjoy the fun of physics with simulations!
Backup site http://enjoy.phy.ntnu.edu.tw/ntnujava/
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First time is the lat time. ...Wisdom
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Author Topic: Find out your blink spot region  (Read 3654 times)
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Fu-Kwun Hwang
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on: January 04, 2011, 09:27:03 am » posted from:Taipei,T'ai-pei,Taiwan

Cover your right eye and focus the left eye on the blue circle with + mark.
Click the play button, the blck circle will move slowly to the left.
Click the disappear check box when you found the black circle disappear,
 Click it again when it appear.

The simulation will show the region where you can not view the object-- your blind spot.

The region will be different if your head is at different distance away from the screen.
However, the angle will be the same.

Embed a running copy of this simulation

Embed a running copy link(show simulation in a popuped window)
Full screen applet or Problem viewing java?Add http://www.phy.ntnu.edu.tw/ to exception site list
Press the Alt key and the left mouse button to drag the applet off the browser and onto the desktop. This work is licensed under a Creative Commons Attribution 2.5 Taiwan License
  • Please feel free to post your ideas about how to use the simulation for better teaching and learning.
  • Post questions to be asked to help students to think, to explore.
  • Upload worksheets as attached files to share with more users.
Let's work together. We can help more users understand physics conceptually and enjoy the fun of learning physics!


from http://en.wikipedia.org/wiki/Blind_spot_%28vision%29
A blind spot, also known as a scotoma, is an obscuration of the visual field. A particular blind spot known as the blindspot, or physiological blind spot, or punctum caecum in medical literature is the place in the visual field that corresponds to the lack of light-detecting photoreceptor cells on the optic disc of the retina where the optic nerve passes through it. Since there are no cells to detect light on the optic disc, a part of the field of vision is not perceived. The brain fills in with surrounding detail and with information from the other eye, so the blind spot is not normally perceived.


* illusion_blindspot.jpg (7.03 KB, 800x182 - viewed 305 times.)
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