Saturday, November 29, 2014

EJSS Vernier Caliper JS Model by Jiun Wei Chia, Fu Kwun Hwang, Loo Kang Wee, Wolfgang Christian.

Vernier Caliper JS Model recreated on JavaScript by Jiun Wei Chia. Original author is Fu Kwun Hwang, Loo Kang Wee, Wolfgang Christian.
another artifact of learning during the EJS-OSP workshop in Singapore.

http://weelookang.blogspot.sg/2014/11/vernier-caliper-js-model-by-jiun-wei.html
source: https://dl.dropboxusercontent.com/u/44365627/lookangEJSworkspace/export/ejss_src_VernierCaliper.zip
model: https://dl.dropboxusercontent.com/u/44365627/lookangEJSworkspace/export/ejss_model_VernierCaliperV3/VernierCaliperV3_Simulation.xhtml
offline: https://dl.dropboxusercontent.com/u/44365627/lookangEJSworkspace/export/ejss_model_VernierCaliperV3.zip
author:  Jiun Wei Chia. Original author is Fu Kwun Hwang, Loo Kang Wee, Wolfgang Christian.


The Vernier Caliper JavaScript Model shows the principle of operation and the physical parts of a Vernier Caliper.

The Vernier calipers model has

  1. an object (Blue) for the internal jaws to measure width of an object with slider to control width of the object and simple drag action to control position of object.
  2. an object (Green) for external jaws to measure internal diameter of a cylinder for example with slider to control dimensions of the cylinder.
  3. checkbox for answer to show the meaning of reading on the main scale and the vernier scale with zero error calculations if any.
  4. drop down menu of the various common vernier scales for sense making and additional testing out by learners their ideas of how vernier works.
  5. fine <> control buttons for learners to manipulate the model with single incremental precision
  6. slider control for fast changes in the vernier measurement
  7. reset button to bring simulaton back to original (default)setting.