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published by the Exploratorium
This activity from the Exploratorium shows how to investigate afterimages, the shapes you see after looking at bright objects and then looking away.  With a flashlight and a few other everyday materials, you can do afterimage experiments and then read an explanation of what happens. The site also describes extensions to observations of the moon and provides information about night vision.
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- The Eye
- Informal Education
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- Instructional Material
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Access Rights: Free access
Restriction: © 2006 Exploratorium
Additional information is available.
Keywords: night vision, retina, rhodopsin, visual purple
Record Cloner: Metadata instance created July 6, 2006 by Ann Deml
Record Updated: May 06, 2008 by Lyle Barbato
Last Update
when Cataloged:
August 4, 2006
ComPADRE is beta testing Citation Styles!

Record Link
AIP Format
(Exploratorium, San Francisco, 2006), WWW Document, (
Afterimage, (Exploratorium, San Francisco, 2006), <>.
APA Format
Afterimage. (2006, August 4). Retrieved October 17, 2017, from Exploratorium:
Chicago Format
Exploratorium. Afterimage. San Francisco: Exploratorium, August 4, 2006. (accessed 17 October 2017).
MLA Format
Afterimage. San Francisco: Exploratorium, 2006. 4 Aug. 2006. 17 Oct. 2017 <>.
BibTeX Export Format
@misc{ Title = {Afterimage}, Publisher = {Exploratorium}, Volume = {2017}, Number = {17 October 2017}, Month = {August 4, 2006}, Year = {2006} }
Refer Export Format

%T Afterimage
%D August 4, 2006
%I Exploratorium
%C San Francisco
%O text/html

EndNote Export Format

%0 Electronic Source
%D August 4, 2006
%T Afterimage
%I Exploratorium
%V 2017
%N 17 October 2017
%8 August 4, 2006
%9 text/html

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