• Corpus ID: 14105577

Gamow's bicycle: The Appearance of Bodies at Relativistic Speeds and Apparent Superluminal Velocities

  title={Gamow's bicycle: The Appearance of Bodies at Relativistic Speeds and Apparent Superluminal Velocities},
  author={Andrzej Nowojewski},
  journal={arXiv: Popular Physics},
  • A. Nowojewski
  • Published 7 December 2005
  • Physics
  • arXiv: Popular Physics
A human creates an image basing on the information delivered by photons that arrived at his retina simultaneously. Due to finite and constant velocity of light these photons left the moving body at different times, since not all points of the body are equidistant. In other words its image represents the body as it was in several different times i.e. it is distorted and does not correspond to its real appearance. The useful experimental arrangement is set and then used to derive the general… 

Figures from this paper

Gamow’s cyclist: a new look at relativistic measurements for a binocular observer
A rigorous re-analysis of the cyclist, this time in three dimensions, is undertaken for a binocular observer, accounting for both the distortion in apparent position and the relativistic colour and intensity shifts undergone by a fast-moving object.
Deformações geométricas e velocidade superluminal aparentes em objetos em movimento relativístico
In this work, continuing the previous one of Ostermann and Ricci (Caderno Catarinense de Ensino de Fisica 19, 176 (2002)), we analyze some apparent geometrical deformations of three objects in


On the apparent visual forms of relativistically moving objects
SummaryThe question of the apparent visual shape of an object moving at relativistic speeds, as perceived by a single observer, is analysed afresh. It is shown by qualitative arguments that the
The visual appearance of rapidly moving objects
I would like to draw the attention of physicists to a recent paper by James Terrell in which he does away with an old prejudice held by practically all of us. We all believed that, according to
Invisibility of the Lorentz Contraction
It is shown that, if the apparent directions of objects are plotted as points on a sphere surrounding the observer, the Lorentz transformation corresponds to a conformal transformation on the surface
Geometrical Appearances at Relativistic Speeds
Geometrical appearances at relativistic speeds (β = 0.5, 0.9, and 0.995) are illustrated for the following examples: (i) the celestial sphere with a number of constellations, (ii) the surface
Apparent Shape of Large Objects at Relativistic Speeds
It has been recently recognized that there is a difference between the measured Lorentz contracted shape of an object moving at relativistic speed and the shape as seen by a single observer. The case
The Geometrical Appearance of Large Objects Moving at Relativistic Speeds
The calculated geometrical appearance of objects moving at relativistic speeds and subtending large angles at the observer is illustrated by diagrams of a plane grid and perspective views of a group
Brightness and color of rapidly moving objects: The visual appearance of a large sphere revisited
An object at relativistic speed is seen as both rotated and distorted when it is large or close by so that it subtends a large solid angle. This is a consequence of the aberration effect and is
Two‐dimensional appearance of a relativistic cube
The two‐dimensional or ’’photographic’’ appearance of a cube moving at relativistic speeds is investigated. It is shown that the appearance of the cube depends upon whether the camera is held fixed
Visual Appearance of a Moving Vertical Line
A vertical line moving with velocity v, when seen, assumes the shape of a hyperbola or parabola accordingly as v   c, which actually is not possible, the line takes the form of an ellipse, or parts
The apparent shape of a rapidly moving sphere
Several articles have considered the apparent shape of a relativistic sphere. One interesting finding showed that, under certain conditions, the surface of the sphere may appear concave. This article