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Glass as raw material
In this exercise about the raw material glass, the glass factory, types of glass, glass manufacturing, etc. are discussed.
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Focal Length: Practice Set
The following things are practiced on the basis of these flashcards:
- different distances;
- in numbers;
- in photos;
- what is angle of view;
- what is sensor;
- telephoto lens;
- wide angle lens;
- average focal length.
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