the-star-stuff:

jtotheizzoe:

Time Cloak Hides (Very Small) Events in Time

You’ve probably seen this on your dashboard today, as a few of my science buds have covered it: “Time Cloak Can Make Time Disappear!” That’s very cool stuff, but what does it mean? 

You might remember a few months ago when I posted about an “invisibility cloak” technology, where beams of light are bent around an object preventing it from reflecting (becoming invisible). There’s a video here. This new “time cloak” uses a special way of slowing down certain of wavelengths of light to do the same thing. Sort of. From SciAm:

The cloak, described in the January 5 issue of Nature, relies on the fact that light of different colors moves at different speeds through certain media. (Scientific American is part of Nature Publishing Group.) Using a device that they call a “time lens,” the researchers split a single-color laser beam into a spread of wavelengths, then slowed half of those wavelengths while speeding up the others. That created a very brief time gap that could be closed again before the beam reached the detector by reversing the lensing process, restoring the beam to a single, seemingly undisturbed wavelength.

Very cool, with implications for computing (good and bad). But you know what’s better? ANIMATIONS!

Click above for a great video explanation of the time cloak, put together by Rose Eveleth. Make much more sense now.

This is much better! =))

  1. r1vka reblogged this from jtotheizzoe
  2. adriot reblogged this from jtotheizzoe
  3. danlotr reblogged this from jtotheizzoe
  4. joshlabarbera reblogged this from jtotheizzoe
  5. adriot reblogged this from jtotheizzoe
  6. heartcork reblogged this from jtotheizzoe
  7. becomingestel reblogged this from jtotheizzoe
  8. rachuchu reblogged this from jtotheizzoe
  9. lenon01 reblogged this from jtotheizzoe
  10. teleological reblogged this from jtotheizzoe
  11. sebasbru reblogged this from jtotheizzoe
  12. bekey reblogged this from jtotheizzoe
  13. adamwheeler reblogged this from jtotheizzoe
  14. ekkoriver reblogged this from jtotheizzoe
  15. ambitious-monkey reblogged this from jtotheizzoe