Physics Now

The Physics of 'Now'

The world is four-dimensional according to fundamental physics, governed by basic laws that operate in a spacetime that has no unique division into space and time. Yet our subjective experience of this world is divided into present, past, and future. What is the origin of this division? What is its four-dimensional description? Is this the only way experience can be organized consistently with ...

Few-body Physics – Then and Now

A summary of the XIVth International Conference on Few-body Problems In Physics is given, with an emphasis on the important problems solved recently and the prognosis for the future of the field. Personal remarks and “homework” problem assignments are made.

Thirty years from now: future physics contributions in nuclear medicine

BACKGROUND This paper is the first in a series of invited perspectives by pioneers of nuclear medicine imaging and physics. A medical physicist and a nuclear medicine physician each take a backward and a forward look at the contributions of physics to nuclear medicine. Here, we provide a forward look from the medical physicist's perspective. DISCUSSION The author examines a number of developm...

Physics Now Reviews by leading physicists in the International Union of Pure and Applied Physics

Semi { Quantitative Physics Compiler : where are we now and where are we going ?

Incomplete information is present in many engineering domains, hindering traditional and non{traditional simulation techniques. This paper describes SQPC (semi{quantitative physics compiler), an implemented approach to modelling and simulation that can predict the behavior of incompletely speciied systems, such as those that arise in the water control domain. SQPC is the rst system that uniies ...