The art of drawing with light can be traced back to prehistoric artists. Cave drawings found in Lascaux, France are an example of how these early artists used light to draw animals and symbols.

Learn about symbols for electrical components and how to draw circuit diagrams. Bitesize Scotland Science article for learners at Second Level Curriculum for Excellence.ls explained for curriculum ...

Symbols are simplified drawings. ... Electricity can travel close to the speed of light – almost 186,000 miles per second. Image caption, Two batteries in a holder. Back to top.

Unfortunately, photographic experimentation often degenerates into photographic adulteration. Some photographers compromise the medium`s strengths, adding a veneer of gimmickry or superfluous techn… ...