Networked communications accord the voice renewed spatial significance. How does the mobile phone influence the use and design of spaces? The conventions for modulating the voice in face-to-face exchanges are well established. But in the case of mobile communications the voice may be raised to abnormal levels. The raised voice overcomes ambient interference, and spatial distance. The voice is a...

Action at a distance in Newtonian physics is replaced by finite propagation speeds in classical physics, the physics defined by the field theories of Maxwell and Einstein. As a result, the differential equations of motion in Newtonian physics are replaced in classical physics by functional differential equations, where the delay associated with the finite propagation speed (the speed of light) ...

It was questions about points on the real line that initiated the study of set theory. Points paved the way to point sets and these to ever more abstract sets. And there was more: Reflection on structural properties of point sets not only initiated the study of ordinary sets; it also supplied blueprints for defining extra-ordinary, “large” sets, transcending those provided by standard set theor...

Standard formulae of classical electromagnetism for the forces between electric charges in motion derived from retarded potentials are compared with those obtained from a recently developed relativistic classical electrodynamic theory with an instantaneous inter-charge force. Problems discussed include small angle Ruther-ford scattering, Jackson's recent 'torque paradox' and circular Keplerian ...

I. Action at a Distance. Imagine a table with a tablecloth draping to the floor. There is a vase on the table. Suddenly, for no apparent reason, the vase moves. What would be your reaction? My guess is that you would wonder what was the cause of the movement. Perhaps there is a motor under the table connected by a hidden wire to the next room where someone flipped a switch. Perhaps the motor is...