written by
Fu-Kwun Hwang
edited by
Loo Kang Wee and Wolfgang Christian
The Micrometer Model shows the principle of operation and the physical parts of a real micrometer. Micrometers use a screw to amplify distances that are too small to measure directly into large rotations of the screw that are big enough to read from a scale. The accuracy of a micrometer derives from the accuracy of the thread that is at its heart. The basic operating principles of a micrometer is that the rotation of an accurately made screw can be directly and precisely correlated to a certain amount of axial movement (and vice-versa), through the constant known as the screw's lead.
The Micrometer model was created using the Easy Java Simulations (EJS) modeling tool. It is distributed as a ready-to-run (compiled) Java archive. Double click the ejs_ntnu_Micrometer.jar file to run the program if Java is installed.
Please note that this resource requires
at least version 1.5 of Java (JRE).
Micrometer Model Source Code
The source code zip archive contains an XML representation of the Micrometer model. Unzip this archive in your EJS workspace to compile and run this model using EJS. download 39kb .zip
Last Modified: June 10, 2014
previous versions
This item is a stand alone Java program but it cannot run in Moodle because web browsers no longer support Java applets. Download the jar file to your desktop to run.
currently, the simulation does not random-size an object, do u want that feature?
Author: lookang
Posted: October 23, 2011 at 11:34PM
Source: The Physics Front collection
question: currently, the simulation does not random-size an object, do u want that feature?
quote: Unit Title: Applying Measurement in Physics
This is a really nice interactive simulation to give students virtual practice in using a micrometer, a device for doing ultra-precise measurement down to the level of 1 micrometer. Each time the "reset" button is pressed, a random-size object appears on screen. Students use sliders to move the object into place, perform the measurement, and check the accuracy of their reading.: unquote:
thank you for kind comments. i keep updating the simulation here http://weelookang.blogspot.com/2010/06/ejs-open-source-micrometer-java-applet.html I think i will add the new feature :)
> On Oct 23, 2011, lookang posted: > > question: > currently, > the simulation does not random-size an object, do > u want that feature? > > quote: > Unit Title: Applying > Measurement in Physics > > This is a really nice interactive > simulation to give students virtual practice in using > a micrometer, a device for doing ultra-precise measurement > down to the level of 1 micrometer. Each time the "reset" > button is pressed, a random-size object appears on > screen. Students use sliders to move the object into > place, perform the measurement, and check the accuracy > of their reading.: > unquote: > > thank you for kind comments. > > i keep updating the simulation here > http://weelookang.blogspot.com/2010/06/ejs-open-source-micrometer-java-applet.html > I > think i will add the new feature :) > >Hello Lookang, >My apologies for the incorrect description within our Units interface. Yes, it would be great if >the simulation random-sized the object to be measured. If you are planning to make this >change, I will leave the description as it is. >Many thanks, >Caroline Hall, Managing Editor, ComPADRE
> On Oct 24, 2011, Caroline Hall-Managing Editor posted > > > > >Hello Lookang > > >My apologies for the incorrect description within > our Units interface. Yes, it would be great if >the > simulation random-sized the object to be measured. > If you are planning to make this >change, I will leave > the description as it is. > >Many thanks, > >Caroline > Hall, Managing Editor, ComPADRE
Hi Caroline! we met before! http://weelookang.blogspot.com/2010/07/personal-review-w20-computer-modeling.html
done! 24 October 2011
added a magnify ability to draw students attention to the lines based on codes from http://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=2268.0 by Fu-Kwun Hwang randomize the size of the black object each time to simulation is reset based on a request on physics front http://www.thephysicsfront.org/items/detail.cfm?ID=9422
9-12: 3B/H6. To reduce the chance of system failure, performance testing is often conducted using small-scale models, computer simulations, analogous systems, or just the parts of the system thought to be least reliable.
11. Common Themes
11B. Models
6-8: 11B/M2. Mathematical models can be displayed on a computer and then modified to see what happens.
AAAS Benchmark Alignments (1993 Version)
12. HABITS OF MIND
B. Computation and Estimation
12B (9-12) #9. Consider the possible effects of measurement errors on calculations.
C. Manipulation and Observation
12C (6-8) #3. Read analog and digital meters on instruments used to make direct measurements of length, volume, weight, elapsed time, rates, and temperature, and choose appropriate units for reporting various magnitudes.
Hwang, F. (2009). Micrometer Model [Computer software]. Retrieved December 13, 2024, from https://www.compadre.org/Repository/document/ServeFile.cfm?ID=9422&DocID=1315
%A Fu-Kwun Hwang %T Micrometer Model %E Loo Kang Wee %E Wolfgang Christian, (eds) %D September 10, 2009 %U https://www.compadre.org/Repository/document/ServeFile.cfm?ID=9422&DocID=1315 %O application/java
%0 Computer Program %A Hwang, Fu-Kwun %D September 10, 2009 %T Micrometer Model %E Wee, Loo Kang %E Christian, Wolfgang %8 September 10, 2009 %U https://www.compadre.org/Repository/document/ServeFile.cfm?ID=9422&DocID=1315
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