This was accomplished by delivering the Vernier â€˜doseâ€™ caliper to a 2D detector array where the nominal scale was the 2D detector array and the non-nominal Vernier scale was the radiation dose strips produced by the high-definition (HD) multileaf collimators (MLCs) of the linear accelerator. The purpose of this study was to demonstrate the feasibility of using a commercial two-dimensional (2D) detector array with an inherent detector spacing of 5â€‰mm to achieve submillimeter accuracy in localizing the radiation isocenter. Photon caliper to achieve submillimeter positioning accuracy All we had on loan for Cricket was a Brailled plastic tactile meter stick with lowâ€¦ Tomac, Mike Bidleman, Cricket Brown, Danīecause she had been blind since birth, we knew that our new student, Cricket, would be unable to make the necessary measurements needed to get any meaningful lab data while all of the other students would be able to use highly accurate commercial Vernier calipers. Homemade Wooden Vernier Scales for Use by Blind Students Three computer model design ideas that complement real equipment are discussed.

The laboratory instruments are the vernier caliper and the micrometer. This paper presents the customization of Easy Java Simulation models, used with actual laboratory instruments, to create active experiential learning for measurements. I have designed much of the above based on their ideas and insights, and I thank the OSP community for which Singapore was honored with 2015-6 UNESCO King Hamad Bin Isa Al-Khalifa Prize for the Use of ICTs in Education.Vernier Caliper and Micrometer Computer Models Using Easy Java Simulation and Its Pedagogical Design Features-Ideas for Augmenting Learning with Real Instruments My sincere gratitude for the tireless contributions of Francisco Esquembre, Fu-Kwun Hwang, Wolfgang Christian, Félix Jesús Garcia Clemente, Anne Cox, Andrew Duffy, Todd Timberlake and many more in the Open Source Physics community. Reset button to bring simulation back to original (default) setting. Slider control for fast changes in the vernier measurement Vernier calipers can measure external dimensions using the pictured lower jaws.Īn 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.Ĭheckbox for hint to scaffold the learners attention and point of focusĬheckbox for answer to show the meaning of reading on the main scale and the vernier scale with zero error calculations if any.ĭrop down menu of the various common vernier scales for sense making and additional testing out by learners their ideas of how vernier works.įine control buttons for learners to manipulate the model with single incremental precision An open source physics at Singapore simulation based on codes written by Fu-Kwun Hwang and Loo Kang WEE.

Vernier Caliper Simulation Flash