Backwards Time Might Not Be Like You Expect

from the cool dept

Found over at WonkoSlice is a story about new research suggesting that time doesn’t go in reverse the way you might expect. It seems that time isn’t symmetrical, and if you happened to have a great big VCR of the world, hitting rewind would show things… um… moving forward. No, I don’t fully understand it either. Any physicists around to help clear this up?

Rate this comment as insightful
Rate this comment as funny
You have rated this comment as insightful
You have rated this comment as funny
Flag this comment as abusive/trolling/spam
You have flagged this comment
The first word has already been claimed
The last word has already been claimed
Insightful Lightbulb icon Funny Laughing icon Abusive/trolling/spam Flag icon Insightful badge Lightbulb icon Funny badge Laughing icon Comments icon

Comments on “Backwards Time Might Not Be Like You Expect”

Subscribe: RSS Leave a comment
mhh5 says:

the internet will tell us...

“Most fundamental physical processes are symmetric in time. The motion of the planets in the gravity field of the sun is reversable- a film of the motion of a planet around its sun can be shown backwards without anyone being able to tell. Similarly to gravity, the strong nuclear and electromagnetic forces are also time-symmetric. Only the weak nuclear force appears to violate this symmetry, and this so far only in the behavior of the neutral kaon.”

So you need to get vcr that’ll record the behavior of particles under the influence of the weak nuclear force… Maybe TiVo will work, or Replay….

bob (user link) says:

Re: the internet will tell us...

Above comment cut off–so repeated in full: A common mistake among all of us is to take our metaphors too seriously. In fact, the notions of forward and backward are spatial metaphors. Why would one think they apply to time at all. For example, wideness is a spatial metaphor too, as is up or down. They don’t apply to time–why should directional metaphors? The truth is (well, perhaps, anyway) that the notions of forward and backward are simply alien to the concept of time, and do not apply to it at all.

Add Your Comment

Your email address will not be published. Required fields are marked *

Have a Techdirt Account? Sign in now. Want one? Register here

Comment Options:

Make this the or (get credits or sign in to see balance) what's this?

What's this?

Techdirt community members with Techdirt Credits can spotlight a comment as either the "First Word" or "Last Word" on a particular comment thread. Credits can be purchased at the Techdirt Insider Shop »

Follow Techdirt

Techdirt Daily Newsletter

Techdirt Deals
Techdirt Insider Discord
The latest chatter on the Techdirt Insider Discord channel...