Friday, 17 April 2026

Coefficient of static friction: Experimental Measurement

 This is an experimental project where you are going to check some of the conceps you learnt in Phisics: The inclined plane movement.




You will calculate the coefficient of friction between to surfaces using the mobile phone as your instrument to take measurements... sheet with the basics

Here you have three videos that explain the activity:

1st video: The basics about Physic concepts applied & the use of the phyphox mobile app

 

 2nd video: Exporting the data to exel, reading the data and understanding the information given

 


 3rd video: Calculating the coefficient with several experiments









Coefficient of kinetic friction: Experimental measurement

 Let`s analyse now the experiment and conclusions to measure the cofficient of friction when the object is already moving on an inclned plane.


Here you have a sheet that explains the basic physic fundaments to understand the activity and some videos that may help you analysing the data given by the phyphox application, using excel.



πŸ‘€Watch this second video and learn how to use excel to analyse all the exported data by the app phyphox.





And how to do the final calculation using the tendence line values is shown is this video πŸ‘€:


Tuesday, 17 March 2026

Using the mobile like a Physics Laboratoty: Angles

 This is our new project!!

You are going to use your mobile phone sensors to take measurements and do Physics calculations.

To do so you will use the android app phyphox



Let us start with trigonometry measurements: activity phyphox01

Here you have the way to calculate the angle using your mobile accelerometersheet1

  1. Install the app on your mobile
  2. Take the measure of different angles
  3. build an excel spreadsheet to do the calculations  (use the excel in office365 to work together with your partner by sharing the same document)
  4. Organize the information on the spreadsheet so that to be printed 
  5. Upload both xlsx and pdf 
  6. Publish an article on your blog explaining the activity and results 






Thursday, 19 February 2026

Mosaic of portraits. Digital Image final project


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πŸ‘‰Digital Image Final project: Do one nice version of mosaic of portraits to create the class photograph. Use the examples here as ideas:πŸ‘ˆ           click here for details
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Here you have a video with a tutorial to get the Andy Warhol effect: 

 
 


πŸ‘‰ Here you have the video tutorials to create the mosaic with the film frames. 

You can do any version of the mosaic of portraits ... If you want to use the film framed, here you have the png frame πŸ“·

πŸ‘€ First you have to prepare the canvas with a resolution of 3300 x 2340 pixels so that you can print it out to a DIN A3 size with 200 dpi as the exercises demands. And then apdapt and calculate the film frame size by dividing the total canvas dimensions into equal rectangles...




Since the photos were taken in a landscape orientation, and there are some of them with two or more people, it is better to mantain this horizontal position in order to be able to keep all people in the take when cropping the image.





πŸ‘€ Now, once you have the canvas ready with all the film frames you have to set all the portrait pics inside the frames... To do this you have to measure the frame resolution to crop the picture with this aspect ratio and scale it later. See here how you may do it...



πŸ‘€ And finally crop the final result, export it as jpg and it is done.





Thursday, 22 January 2026

The Gimp. Getting started with Gimp: Editing landscape pictures

 This post is to give you the main instructions to start with Gimp

You can find some videos that explain the use of some of some tools tools of the program Gimp2

You will have to instal the program on your home computer. 

Learn first: 

  • How to organize the working area
  • How to find all the tools (tool box)
  • How to prepare the main windows (undo hystory, layers, tool options,...)
  • How to save: where to save, file format (= extension name)
  • How to export: image formats, (=extension name: png, jpg, gif,...)
  • How to use the OneDrive tool to save your projects or images

Video 1: Clone tool, Perspective tool, cropping tool. How to save, how to export and how to add a folder to the program when you are using it as a frequent place to save documents.

I apologize for the quality of the video. It is recorded with Teams and has some cuts on the sound and image



Videos 2 and 3 (the complete tutorial has two parts) :  it explains how to fix inclined pictures using the Rotate tool. Normal and corrective mode. Try both. Save as and export as in different formats (extension name)

part1: 


part 2: save and export

Monday, 24 November 2025

Vector graphics: Getting started with Inkscape

πŸ‘‰ Remember to do the class activities: 41 & 42 : about print size and resolution in raster images and publish a new article on your blog with the explanation... label it as raster images, print size, resolution


Vector Graphic images:

Use the program Inkscape to do execise 48 of the unit: inkscape activities for vector graphic generation: Swedish and European flags.

step by step tutorial for the Swedish flag, and European flag

You can find here videos that explain how to do it:




To work with InkScape you can use the portable version (recomended) I sent to you or you could also download and install the desktop version from this link: inkscape

If you need to use win rar to extract or compress any document or folder you can use the given link. Download and install.  

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πŸ‘€ Inkscape exercises: European and Swedish flags, plus another one of your choice. Publish the three flags, with your name on each of them in a new article of your blog

πŸ‘€ Project 04: Poststage stamp: follow this tutorial to create your own stamp.  
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