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published by the Exploratorium
This site from the Exploratorium provides an activity to detect the flickering of a LED or neon glow tube. These light sources turn on and off too frequently to be observed normally, but when an observer makes a raspberry (gives a Bronx cheer), the observer sees a flickering light.  The site contains an explanation for the effect and suggestions for other activities that demonstrate the same results. This activity is part of Exploratorium's Science Snacks series.
Subjects Levels Resource Types
- The Eye
- High School
- Middle School
- Informal Education
- Instructional Material
= Activity
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- Learners
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Access Rights: Free access
Restriction: © 2006 Exploratorium
Has a copyright or other licensing restriction.
Keywords: perception, vision
Record Creator: Metadata instance created June 13, 2006 by Ann Deml
Record Updated: Aug 02, 2016 by Lyle Barbato
Last Update
when Cataloged:
August 2, 2006
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Record Link
AIP Format
(Exploratorium, San Francisco, 2006), WWW Document, (
Bronx Cheer Bulb (Exploratorium, San Francisco, 2006), <>.
APA Format
Bronx Cheer Bulb. (2006, August 2). Retrieved June 14, 2024, from Exploratorium:
Chicago Format
Exploratorium. Bronx Cheer Bulb. San Francisco: Exploratorium, August 2, 2006. (accessed 14 June 2024).
MLA Format
Bronx Cheer Bulb. San Francisco: Exploratorium, 2006. 2 Aug. 2006. 14 June 2024 <>.
BibTeX Export Format
@misc{ Title = {Bronx Cheer Bulb}, Publisher = {Exploratorium}, Volume = {2024}, Number = {14 June 2024}, Month = {August 2, 2006}, Year = {2006} }
Refer Export Format

%T Bronx Cheer Bulb %D August 2, 2006 %I Exploratorium %C San Francisco %U %O text/html

EndNote Export Format

%0 Electronic Source %D August 2, 2006 %T Bronx Cheer Bulb %I Exploratorium %V 2024 %N 14 June 2024 %8 August 2, 2006 %9 text/html %U

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