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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.
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 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 Java Simulation Grades 6-12
ComPADRE is beta testing Citation Styles!
![]() <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>
![]() F. Hwang, (2001), WWW Document, (https://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=38.0).
![]() F. Hwang, NTNU Java: The World Through a Hole (2001), <https://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=38.0>.
![]() 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
![]() 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).
![]() 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>.
![]() @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}
}
![]() %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 ![]() %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 Disclaimer: ComPADRE offers citation styles as a guide only. We cannot offer interpretations about citations as this is an automated procedure. Please refer to the style manuals in the Citation Source Information area for clarifications.
Citation Source Information
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. The Chicago Style presented is based on information from Examples of Chicago-Style Documentation. The MLA Style presented is based on information from the MLA FAQ. This resource is stored in a shared folder. You must login to access shared folders. NTNU Java: The World Through a Hole:
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