Light Analyzer (need Diffracti

Open Source Physics Singapore

About this app

HTML5 version
https://iwant2study.org/ospsg/index.php/interactive-resources/physics/04-waves/03-electromagnetic-spectrum/643-datalogger

direct link
https://iwant2study.org/lookangejss/04waves_13electromagneticspectrum/ejss_model_spectrumanalyzer_2019_v21/spectrumanalyzer_2019_v21_Simulation.xhtml

v21:
updated to ionic 4
added compare button with real data from internet


v13:
automatically asked for camera permission
to be used with a 3D printed attachment see screenshots
position attachment in front of the back camera
take a photo of the light spectrum from sunlight and click the ruler to analyze the emission spectrum
a comparison of the camera data and Wikipedia theoretical image
take a photo of the light spectrum from a normal lamp and click the ruler to analyze the emission spectrum

v6:
Physical Apparatus needed to use App
A diffraction grating to be placed in front of the camera
A light source such as a multi propose laser pointer
Handphone with App/Chrome Browser or a laptop with a camera

recorded to work better now
added back camera
added calibration of known zeroth and first-order diffraction light of the RED laser.
added auto find light

current version 4
some phones/Android OS (XiaoMi etc) may require App permission for CAMERA to be turn on.
some phones/Android OS (Samsung) could be automatic.
close the App and restart App again, it should now detect the given CAMERA permission.




About
An open source physics at Singapore simulation based on codes written by Félix Jesús Garcia Clemente.
more resources can be found here
http://iwant2study.org/ospsg/index.php/interactive-resources/physics

Introduction
prototype

Interesting Fact
This data logger record intensity of brightness of red, green,blue light and even allows the phone camera to record real time data.

Acknowledgement
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. I have designed much of the above based on their ideas and insights.
This research is supported by the eduLab project AEP 01/18 LTK Promoting joy of learning by turning phone into 3 scientific equipment, awarded by the Ministry of Education (MOE), Singapore and managed by National Institute of Education (NIE), Singapore.
reference:
http://iwant2study.org/ospsg/index.php/projects/576-aep-01-18-ltk-promoting-joy-of-learning-by-turning-phone-into-3-scientific-equipment

Ratings and reviews

This app is ingenious. I think the developers are on to something here. After lots of effort and lots of trials and errors, I finally got this app to work for me. I couldn't get consistent results with my homemade contraption, but I did get it to work. My suggestion is they are going to have to make-and-sell the adapter that fits on the cell phone. Next, they will have to find a way to calibrate the app to adjust for different cell phone cameras. This way, the user will get good results.

PITA to use. Does not show what area of the screen its using to calculate spectra. Will not back out of program. Kind of neat when you actually capture something, but very inaccurate since it doesn't show you where it's measuring from. While it does function a lot of work needs to be put into usability and the UI.

I had a diffraction grating, laser, and light ready, however inside the app there was no camera preview and no instructions. I tried pressing the camera button and nothing happened. I also tried checking and pressing pretty much everything and never really got it to do anything. If this app works it really needs help with the UI.

What's new

updated to ionic 4
added compare to check library data