Glossary

Photoconductivity

The metal selenium is photoconductive. The amount of electricity it can carry varies as the amount of light shone on it changes.

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Vector Graphics

There are two types of computer graphic; Bitmaps - where each picture is made up of small squares called pixels; and Vectors, where each picture is defined by a set of  points and the paths between them. 

The graphics on this website are all bitmaps. However, they were all created with a vector graphics package, Micrografx Draw. 

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Are there any other words you would like to see in the glossary? Email me at stem@dhellam.purplenet.co.uk to let me know.

 

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