POSSIBLY the question, What is the fourth dimension? may admit of an indefinite number of answers. I prefer, therefore, in proposing to consider Time as a fourth dimension of our existence ...

Electrons moved in two dimensions when influenced by a magnetic field, hinting at how a similar effect would occur in the fourth dimension.

accompanied by a dramatic gunshot noise. UNIT member Benton makes a return having previously been introduced in The Invasion. Here he is promoted to Sergeant and will be a regular fixture in the ...