Designing and making a spectroscope

 What is a spectroscope? It is a device that breaks down radiation (e.g. that of the sun) and makes the result, a spectrum, visible for the observing person. 

To make the spectrometer you need first to know whitch are its elements or parts:

• entrance slit
• grating
• detector

So you would need to design a device with all these elements, by studying what is the best way to catch and view the spectrum. Instead of that you can choose one of some existing designs, to try and learn from it... Later you may give proposals about changes and improvements.

Possible designs:

Here I give to you some possible designs for your spectrometer. Revise all of them and choose, according to your criteria, the best one to be made.

Design 01: mini-spectrometer by CERN Open Hardware Licence

Design 02: simple model by the Royal Society of Chemistry

Design 03: pocket-sized spectrometer by University of Wisconsin 

Design 04: box based spectrometer by livescience 

Design 05: cylindrical spectrometer by Eu-Hou  👉  here

Design 06: minibox-spectrometer by pagciencia

This project is to be done in groups of three or two students. Every group has to do two different models and compare and analize the results. 

Steps to do the project:

1) Learn what a spectroscope is and what a spectrum is

2) Revise the possible solutions

3) Choose two designs and draw the 1:1 scale of your models (3D drawing, surface development and views)

4) Prepare a table with all material you need 

5) Make a construction plan

6) Make your spectroscopes

7) Use it on different light sources. Take pictures of the spectra

8) Do a poster to explain the whole process

The poster has to include:

1) Title, school logo and author names

2) Brief explanation about what a spectroscope is and what a spectrum is

3) Spectroscope designs

4) construction plan with materials ands tools

5) Final Spectroscipe photos

6) Main construction problems

7) Several examples of spectra (photos)

8) General evaluation of the project and Conclusions

Using and testing your spectroscope. Taking and editing spectra photographs 

Watch these videos to help you with this part of the project:

This is to help you editing and cropping the pictures:

Scale calculations and dimensioning

 How to calculate the scale when you have the dimensioned drawing.

Remember that the dimensions in the drawing are always real dimensions in mm.

Watch this video that shows an example:

Calculate the real dimensions of an object when you have the drawing and the scale.

Example for reducing scales:

Calculate the real dimensions of a microchip knowing the scale: 20:1 (enlarging scale)

Learn also how to dimension the drawing later

 

Learn now how to dimension a drawing.

Remember that you need to include always the real dimensions in mm.

Remember also that all dimensions that you read on a drawing are real dimensions in mm.

Watch these two videos to understand how to do it:

👉Project Sketchup 04: Draw the scaled and dimensioned views of figures 44 and 45, Include both and their correspondant 3D figure in one single document similar to the ones you did before.

• Draw the views of figure 44 using the scale 1:1.
• Use the 1:10 scale to draw the views of figure 45, 
• Add all dimensions in both 3D and views of figures 44 and 45
• Do not forget the title block where you have to say the scale you are using and the unit in mm

Pictorial Views with sketch up

Activity 003 with sketchup:


Find here the solutions to the exercises 9, 10 and 11 of unit 2


Draw, using sketch up,  four or six of the following figures: (18-4, 18-5, 18-6, 18-7 , 18-8 , 18-9, 18-10 and 18-11)

Export the four figures and paste them to a Word document using Office 365. Remember to include your name and the figure name in each of the four figures. The final result, including the tittle block, should look like this

👉Upload the final pdf  document. If you have time and want to improve your mark you can do the six  figures instead of four.

👉If you did not do correctly the first two activities repeat it and upload it again.👈

👉 Everything before November 20th 👈

sketch up. Project 02

 Go and get familiar with the following site: [https://virtual-graph-paper.com/ ]  click here

Draw there the views, front, plan and left side for the exercises 34 and 35.

Draw later the 3D figures using sketch up

Paste and layout everything in one single document as the example below.

Save it as pdf and upload it.

👀The example above is only to show how the final project has to look, Views and figures do not correspond to the exercises 34 and 35.

Drawing tools and sketchup

Ferrari F1 engine

You can find here the videos we watched in class about the use of the protractor and the set squares. They will help you do the exercises properly.

• How to use the protractor to take measures or to draw given angles. (There are two parts of the video)

• How to use the set squares to draw a parallel or a perpendicular line to a given line.

Drawings are very important in the technology classes, I advise you to be careful while drawing so that they look clear and neat.

These two links are to learn about the crating technique and practice. 

Another useful tool is sketchup, [https://www.sketchup.com/https://www.sketchup.com/products/sketchup-free]. You only need a google account to open and model with the program.

ADVICE: Try not to use your mobile number to sign in the gmail account, use another account instead. Here you have a post to help you with it.

👀 Watch this video to know how to start with sketchup:

Activities: Draw the 3D model of the exercises 10 and 11 of the unit 2.

Do the drawings considering that each square = 10 cm = 100 mm

Export the figure as a png file and paste all of them in a DIN A4 sheet as you can see here, include a title block with name, surname, class and description of the work:

👉Do activity in pairs using the Office 365 sharing the document. Export the document later as a pdf document and upload it using the EducamosCLM platform. Be sure you meet all the conditions and date. More details in your virtual lesson in EducamosCLM.
Add the title block in the document footer with your name, surname and class and include sketchup01 as the exercise name. 

Watch these videos to learn:

 👀 How to create one of the figures, how to save with skech up and how to export the png drawing that ca be pasted on a word document later.  The video has three parts:

1.- Open sketch up, organize the folders and working area

2.- Draw the figure, step by step

3.- Save, export, crop...

 👀 How to create your title block for all your Technology projects, how to paste and adapt your figures to the document and how to save it as pdf document.

Welcome to Technology through English

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Hallo everyone, this site will be for the second year technology students. This way, you can revise the content you have learned in class and  find also more detailed information about the topics you may find interesting.

We can start revising the videos you could watch in class as examples of the different types of work organization: craftsmanship, mass production and major engineering works. You can also see a fragment of a funny film to show one of those types of work organization.

Come on and enjoy yourself!

• Truck assembly line   (video 1)
• building construction  (video 2)
• violins: how it is made  (video 3)
• modern times... or not so modern

👉 Exercise 1. Unit 1. Download and fill in the following exercises. One is to be done watching the videos 1,2 and 3. The exercise 2 is to classify products according to the three main ways of work organization. 

Project Presentation and Poster 20-21

The last stage of the Technological Process is the evaluation and one part of it is the public presentation of the project.

To do that you have to prepare some documents with relevant infomation about all the Technological process you have followed.

You can find all technical report documents here, but watch also this video that helps you preparing all the content needed to make the poster...

And, to support your presentation, you will have to make a poster with all the information:

Here you have another video that explains how to do it using PowerPoint templates downloaded from this web side:

In case you do not have the PowerPoint program installed on your computer, or you prefer to do the poster using an online application, watch the next video that explains how to use these two options:

• Microsoft PowerPoint 365 included on your educastillalamancha credentials
• Google presentations included on your google apps  (minute 9:31 of the video)