Need Chrome for all devices except iOS not supported yet, Mac can but need to use Chrome.
About
Translations
Code | Language | Translator | Run | |
---|---|---|---|---|
Software Requirements
Android | iOS | Windows | MacOS | |
with best with | Chrome | Chrome | Chrome | Chrome |
support full-screen? | Yes. Chrome/Opera No. Firefox/ Samsung Internet | Not yet | Yes | Yes |
cannot work on | some mobile browser that don't understand JavaScript such as..... | cannot work on Internet Explorer 9 and below |
Credits
Félix J. García Clemente; Tze Kwang Leong; Loo Kang Wee
end faq
Using webpage and diffraction grating with 3D printed holder
(need to print yourself https://drive.google.com/file/d/1fUGUpJxKvVWYoVEh-YfhQ8FEo_uo7Mz9/view
to measure properties of light over a specific portion of the electromagnetic spectrum, typically used in spectroscopic analysis to identify materials
https://itunes.apple.com/us/app/light-analyzer/id1431659002?mt=8
Resources to make the spectrometer work
https://publiclab.org/sites/default/files/8.5x11mini-spec3.8.pdf SpectralWorkbench.org
https://publiclab.org/wiki/smartphone-spectrometer Smartphone spectrometer How to 3D Print Edited by Joseph Tan Jit Bin (NUSHS)
For Teachers
- navigate to the website https://iwant2study.org/taskmeisterx/index.php/interactive-resources/physics/04-waves/03-electromagnetic-spectrum/643-datalogger and click on the latest thumbnail
- prepare the physical apparatus needed
- discharge lamps, handphone, diffraction grating setup 3D printed , rubber
- on the handphone it should look like this, agree to let Chrome mobile take video and sound if prompted
- fix the diffraction grating using a rubber to the back camera of the phone as shown
- fix a lamp on the discharge lap setup and turn it on, say first lamp is Helium
- point the camera with the diffraction grating on the table, make sure the fluorescent lamp on the room is able to the captured through the grating as a reference light spectrum source pattern
- click calibrate
- after clicking calibrate, the display will show the fluorescent lamp spectrum as the light from the fluorescent lamp came through the diffraction grating intot he camera to produce this image
- click identify
- after identify, point the camera with the diffraction grating as a new light source say the Helium lamp discharge
- click confirm button
- after confirm,
- click compare to compare with our results from the internet as possible answers.
- while doing the new light, make sure not to shift the diffraction grating position from the camera on the phone else, need to re-calibrate with fluorescent light again
- Next light source say mercury, click identify
- aim the camera through the diffraction grating to get a light emission spectrum and click identify
- after identify, the screen may say something like mercury found
- click compare and see the line emission lines from phone (above) to the picture resource from internet (below)
- next, try Neon lamp
- click on the identify and aim the camera on the lamp
- click compare to see the result from the camera (above) and the resource of the internet (below)
- so it is possible to use the phone via our webpage to gather emission spectrum and even identify some of the common gases in our database.
1 mm slit https://iwant2study.org/taskmeisterx/index.php/643 |
2 mm slit Bigger slit = brighter but less defined (wider peaks) https://iwant2study.org/taskmeisterx/index.php/643 |
Video
https://www.youtube.com/watch?v=XQiUvY94uMc
https://www.youtube.com/watch?v=pVV14jZyAqg
https://www.youtube.com/watch?v=hZkVYuw4pJ4 Making your Foldable Paper Cellphone Spectrometer by Marysusan Noll
Version:
- prototype: https://iwant2study.org/lookangejss/00workshop/2017FelixPaco/day4/ejss_model_dataLogger/dataLogger_Simulation.xhtml
- https://iwant2study.org/lookangejss/04waves_13electromagneticspectrum/ejss_model_dataLogger/
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looking for the old 2018 version? https://iwant2study.org/lookangejss/04waves_13electromagneticspectrum/ejss_model_spectrumanalyzer/spectrumanalyzer_Simulation.xhtml Use this instead.
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2019 version 2: https://iwant2study.org/lookangejss/04waves_13electromagneticspectrum/ejss_model_spectrumanalyzer_2019_v2/
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2019 version 3: https://iwant2study.org/lookangejss/04waves_13electromagneticspectrum/ejss_model_spectrumanalyzer_2019_v3/
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2019 v4: https://iwant2study.org/lookangejss/04waves_13electromagneticspectrum/ejss_model_spectrumanalyzer_2019_v4/
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https://iwant2study.org/lookangejss/04waves_13electromagneticspectrum/ejss_model_spectrumanalyzer_2019_v7/
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https://iwant2study.org/lookangejss/04waves_13electromagneticspectrum/ejss_model_spectrumanalyzer_2019_v9/
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https://iwant2study.org/lookangejss/04waves_13electromagneticspectrum/ejss_model_spectrumanalyzer_2019_v10/
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https://iwant2study.org/lookangejss/04waves_13electromagneticspectrum/ejss_model_spectrumanalyzer_2019_v13/
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https://iwant2study.org/lookangejss/04waves_13electromagneticspectrum/ejss_model_spectrumanalyzer_2019_v14/ identify gas more correctly before change layout
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https://iwant2study.org/lookangejss/04waves_13electromagneticspectrum/ejss_model_spectrumanalyzer_2019_v15/ before changing to landscape again
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Other Resources
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end faq
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