Jump to content

Light 360?

Endy0816
in Astronomy and Cosmology

Featured Replies

Would it be possible for one or more cases of successive gravitational lensing to direct light back towards its source?

It may require a black hole to do this, but yes it is possible that some light would be sent back to the source (that's 180º by the way).

 

This is the nearest reference I could find: http://apod.nasa.gov/htmltest/gifcity/gotops.html

"A photon could leave the back of your head, go once around the black hole, and be seen by your eye - you can see the back of your head."

  • Author

Thanks, and yeah, my brain is a bit fried.

Archived

This topic is now archived and is closed to further replies.

Go to topic listing

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.

Configure browser push notifications
Chrome (Android)
  1. Tap the lock icon next to the address bar.
  2. Tap Permissions → Notifications.
  3. Adjust your preference.
Chrome (Desktop)
  1. Click the padlock icon in the address bar.
  2. Select Site settings.
  3. Find Notifications and adjust your preference.