NTNU Java: The World Through a Hole

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written by Fu-Kwun Hwang

Available Languages: English, Dutch, German

This is a Java applet designed to give users a simulated look at the function of a pinhole camera device. Students can change the size and orientation of the pinhole and view the path of light rays from five points on a source. Though simple, this resource clearly demonstrates why an image through a pinhole will be inverted at the screen or focal plane. Users who register on this web site may also download additional resource files and tips for using this simulation in the classroom.

This item is part of a much larger collection of physics simulations by the same author.

Please note that this resource requires Java Applet Plug-in.

https://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=38.0

Subjects	Levels	Resource Types
Optics - Geometrical Optics = Pinhole	- High School - Lower Undergraduate	- Instructional Material = Instructor Guide/Manual = Interactive Simulation - Audio/Visual = Movie/Animation

Appropriate Courses	Categories	Ratings
- Physical Science - Physics First - Conceptual Physics - Algebra-based Physics - AP Physics	- Activity - New teachers	Currently 0.0/5 Want to rate this material? Login here!

Intended Users:: Learner
Educator
Formats:: application/java
text/html
Access Rights:: Free access
Restriction:: © 2001 Fu-Kwun Hwang
Keywords:: ray diagrams, light rays, pinhole
Record Cloner:: Metadata instance created January 23, 2008 by Alea Smith
Record Updated:: February 22, 2025 by Lyle Barbato
Last Update when Cataloged:: January 29, 2004
Other Collections:: The Physics Source

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This resource is part of 3 Physics Front Topical Units.

Topic: Nature and Behavior of Light
Unit Title: Ray Optics -- Reflection and Refraction of Light

A very simple yet enlightening simulation for exploring the function of a pinhole camera. The applet draws lines from five points on a source through the pinhole. Students can see the path of each ray of light and the resulting inverted image. We suggest letting students play with this applet AFTER they have completed one of the labs above on pinhole cameras.

Link to Unit:

Topic: Nature and Behavior of Light
Unit Title: Microscopy and Optical Devices

Link to Unit:

Topic: Nature and Behavior of Light
Unit Title: Microscopy and Optical Devices

Java Simulation Grades 6-12
A very simple yet enlightening simulation for exploring the function of a pinhole camera. Appropriate for middle school, the applet draws lines from five points on a source through the pinhole. Students can see the path of each ray of light to help them understand why the image will be inverted at the back of the camera box. We suggest letting students play with this applet AFTER they have completed one of the labs above on pinhole cameras.

Links to Units:

Physical Sciences K-8 Microscopy and Optical Devices Unit

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Record Link

<a href="https://www.compadre.org/precollege/items/detail.cfm?ID=6377">Hwang, Fu-Kwun. NTNU Java: The World Through a Hole. January 29, 2004.</a>

AIP Format

F. Hwang, (2001), WWW Document, (https://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=38.0).

AJP/PRST-PER

F. Hwang, NTNU Java: The World Through a Hole (2001), <https://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=38.0>.

APA Format

Hwang, F. (2004, January 29). NTNU Java: The World Through a Hole. Retrieved April 24, 2025, from https://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=38.0

Chicago Format

Hwang, Fu-Kwun. NTNU Java: The World Through a Hole. January 29, 2004. https://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=38.0 (accessed 24 April 2025).

MLA Format

Hwang, Fu-Kwun. NTNU Java: The World Through a Hole. 2001. 29 Jan. 2004. 24 Apr. 2025 <https://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=38.0>.

BibTeX Export Format

@misc{ Author = "Fu-Kwun Hwang", Title = {NTNU Java: The World Through a Hole}, Volume = {2025}, Number = {24 April 2025}, Month = {January 29, 2004}, Year = {2001} }

Refer Export Format

%A Fu-Kwun Hwang %T NTNU Java: The World Through a Hole %D January 29, 2004 %U https://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=38.0 %O application/java

EndNote Export Format

%0 Electronic Source %A Hwang, Fu-Kwun %D January 29, 2004 %T NTNU Java: The World Through a Hole %V 2025 %N 24 April 2025 %8 January 29, 2004 %9 application/java %U https://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=38.0

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The AIP Style presented is based on information from the AIP Style Manual.

The APA Style presented is based on information from APA Style.org: Electronic References.

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