• Corpus ID: 123363312

Relativity and common sense

  title={Relativity and common sense},
  author={B Hermann},

The twin paradox and space topology

If space is compact, then a traveller twin can leave Earth, travel back home without changing direction and find her sedentary twin older than herself. We show that the asymmetry between their

Distance in Schwarzschild spacetime

We overview four different tools to measure distance: adapted coordinates, the spatial projector, tetrads, and the radar metric. Because spatial measurement has been underdeveloped in relativity, we

The k-calculus Approach and the Generalized Lorentz Transformations

In [1] J. Winnie develops the consequences of the Special Theory of Relativity (STR) when no assumptions are made concerning the one-way velocity of light. He weakens the Second Postulate of STR to

The Rates of the Passing of Time, Presentism, and the Issue of Co-Existence in Special Relativity

  • A. Newman
  • Philosophy
    Foundations of Physics
  • 2021
By considering situations from the paradox of the twins in relativity, it is shown that time passes at different rates along different world lines, answering some well-known objections. The best

The invisibility of time dilation

An instructional approach is described that introduces world-maps, world-pictures and event-diagrams to clarify the applicability of key equations in special relativity for improved understanding by unpacking ‘the invisibility of time dilation’ from the perspectives of both physics and pedagogy.

Cosmic event horizons and the light-speed limit for relative radial motion

Cosmic event horizons separate spacetime into disjoint regions: those regions whose light signals can reach us, and more distant regions we cannot, even in principle, observe. For one type of cosmic

Rindler horizons in a Schwarzschild spacetime

We investigate the past and future Rindler horizons for radial Rindler trajectories in the Schwarzschild spacetime. We assume the Rindler trajectory to be linearly uniformly accelerated (LUA)

An Introduction to Influence Theory: Kinematics and Dynamics

Influence theory is a foundational theory of physics that is not based on traditional empirically defined concepts, such as positions in space and time, mass, energy, or momentum. Instead, the aim is

Einstein's physical geometry and the Minkowski spacetime

In Einstein's physical geometry the geometry of space and the uniformity of time are treated as non-conventional physical geometry and chronometry. However due to the stipulation of the isotropy of

Information-Based Physics and the Influence Network

I know about the universe because it influences me. Light excites the photoreceptors in my eyes, surfaces apply pressure to my touch receptors and my eardrums are buffeted by relentless waves of air