from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Alternative spelling of light cone.


Sorry, no etymologies found.


  • This is cool -- an RSS-enabled gizmo that tracks your own personal "lightcone" a term that may register with devout pop-sci readers and Charles Stross fans.

    Archive 2006-05-01

  • The problem is then of course that there are Lorentz transformations that would topple part of the the superluminal lightcone upside down, depending on the direction of the boost, such that these particles would indeed collect to a point rather than expand.

    Rules for Time Travelers

  • The lightcone on the frame of a distant galaxy has an orientation different than the lightcone for your local frame.

    Does Space Expand?

  • Spacetime events move from within the future lightcone to the past lightcone.

    Have a Thermodynamically Consistent Christmas

  • One can really class all future changes occur within “single” galactic localities, and all galaxies, that are sufficiently lightcone isolated, are sources of thier own big_bangs?

    Play the Quantum Lottery!

  • It's a little pointless of the Eschaton to scatter humans outside of its time-reversed lightcone when they then will invent FTL for themselves, deep in the past of the creation of the Eschaton.

    Archive 2007-06-04

  • Such processes, or worms in space time, will normally be time-like; that is, every point on its world line lies in the future lightcone of the process 'starting point.

    Causal Processes

  • One particularly simple and general example of a causal system that fulfills the definition and has been motivated by experiments are lightcone causality for propagating signals, which follows from locality and lorentz invariance.

    AIDS denial and creationism--common thread of bad statistics - The Panda's Thumb

  • Instead of looking for wireframe tesseracts teeming with vibrant phantom geometry and complex displays of 'interactive' data, the judges should've pulled their collective heads out from the future-forward lightcone for a minute.

    State of Play Virtual Architecture 1.0: Contest Judges Say Enough with the Simulacra Already


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