In this engaging volume, Professor G. J. Whitrow (1912-2000) takes us on a good-humored and wide-ranging tour of the thing that clocks keep (more or less). He discusses how our ideas of time originated, and coaxes the layment to contemplate with pleasure the differences between cyclic, linear, biological, cosmic, and space-time, while providing frequent diversions into fascinating topics such as the Mayan calendar, the migration of birds, and the dances of bees. This reissue of the classic and authoritative What is Time? includes a new introduction by Dr J. T. Fraser, founder of the International Society for the Study of Time, and a bibliographic essay by Dr Fraser and Professor M. P. Soulsby of the Pennsylvania State University.

As we navigate through life we instinctively model time as having a flowing present that divides a fixed past from open future. This model develops in childhood and is deeply saturated within our language, thought and behavior, affecting our conceptions of the universe, freedom and the self. Yet as central as it is to our lives, physics seems to have no room for this flowing present. What Makes Time Special? demonstrates this claim in detail and then turns to two novel positive tasks. First, by looking at the world "sideways" - in the spatial directions -- it shows that physics is not "spatializing time" as is commonly alleged. Even relativity theory makes significant distinctions between the spacelike and timelike directions, often with surprising consequences. Second, if the flowing present is an illusion, it is a deep one worthy of explanation. The author develops a picture whereby the temporal flow arises as an interaction effect between an observer and the physics of the world. Using insights from philosophy, cognitive science, biology, psychology and physics, the theory claims that the flowing present model of time is the natural reaction to the perceptual and evolutionary challenges thrown at us. Modeling time as flowing makes sense even if it misrepresents it.

A look at the human sense of time, a biological rhythm that may follow a different beat from that dictated by external, "official," "objective" timepieces. Time and Place—Timeplace—is a continuum of the mind, as fundamental as the spacetime that may be the ultimate reality of the material world.Kevin Lynch's book deals with this human sense of time, a biological rhythm that may follow a different beat from that dictated by external, "official," "objective" timepieces. The center of his interest is on how this innate sense affects the ways we view and change—or conserve, or destroy—our physical environment, especially in the cities.

'What is time?' Well-known philosopher and intellectual historian, Eva Brann mounts an inquiry into a subject universally agreed to be among the most familiar and the most strange of human experiences. Brann approaches questions of time through the study of ten famous texts by such thinkers as Plato, Augustine, Kant, Husserl, and Heidegger, showing how they bring to light the perennial issues regarding time. She also offers her independent reflections. Examining the three phases of time, past, present, and future, she argues that neither external time nor the time of the human past is real: the one is a comparison of motions and the other a projection of memory. She concludes that true time is internal and has its origin in the imaginative structure of memory and expectation. Throughout her rich and original study, Brann never fudges the central fact that time is a mystery.

A brilliant graphic exploration of the physics and philosophy of time.