31–40 of 129 posts
I managed to confuse myself into a Zeno’s paradox situation with how black holes grow. This is really exotic space. Time dialation immediately outside of the event horizon would make any matter fall so slow that it would take millions of years of time for an observer to see that material cross the horizon.
We have people like string theorists thinking about higher dimensions in space. It occurred to me the other day when the dark matter article hit the front page that our equation for gravity works with three dimensions but those dimensions are uniform. I can turn an object with very little effort (literally without doing work) and it’s the same size from our perspective. How would it work if matter has more dimensions…
PBS Space Time did a recent episode on higher spacial dimensions and gravity. https://www.youtube.com/watch?v=3HYw6vPR9qU
:(
I've seen a couple of articles about this guy recently and they both struck me as weirdly credulous given the apparently complete lack of evidence supporting his theory and the fact that approximately no other scientists seem to find it credible.
Earlier quoted context omitted.
PBS Space Time did a recent episode on higher spacial dimensions and gravity. https://www.youtube.com/watch?v=3HYw6vPR9qU
The delivery on this program is extremely annoying and slow paced (and rushed on points that ought be slow). :(
Earlier quoted context omitted.
After all the big discoveries (and personalities) of the 20th century, physics has seemed to be relatively quiet lately. So people are eager for the next big and dramatic change to our understanding. And that's what George Chapline is offering the pop sci press.
If what LIGO achieved is not loud enough for the 21st century, then we are probably doomed. It is a NEW kind of telescope that has not even been utilized for 1% of its potential. PS: I'm not arguing with your statement, you have all the right to think that way. Maybe even people who lived during Einstein's earlier times thought the same for their previous century.
Earlier quoted context omitted.
PBS Space Time did a recent episode on higher spacial dimensions and gravity. https://www.youtube.com/watch?v=3HYw6vPR9qU
The delivery on this program is extremely annoying and slow paced (and rushed on points that ought be slow). :(
Also, go through the older videos. A lot of what's covered today builds on the previously released shows.
Earlier quoted context omitted.
How would you ever observe black hole to grow/accreate matter then?
Infalling matter or radiation becomes ‘simply’ infinitely red-shifted (on account of the slowed time), and hence undetectable to an external observer — and is hence indistinguishable from the bulk of the prior-existing “black hole proper”.
Earlier quoted context omitted.
How would you ever observe black hole to grow/accreate matter then?
Infalling matter or radiation becomes ‘simply’ infinitely red-shifted (on account of the slowed time), and hence undetectable to an external observer — and is hence indistinguishable from the bulk of the prior-existing “black hole proper”.
Earlier quoted context omitted.
If what LIGO achieved is not loud enough for the 21st century, then we are probably doomed. It is a NEW kind of telescope that has not even been utilized for 1% of its potential. PS: I'm not arguing with your statement, you have all the right to think that way. Maybe even people who lived during Einstein's earlier times thought the same for their previous century.
I would argue that one of the reasons why physics news has been quiet is because the state of the field has moved beyond a lay person's understanding at more than a high level.
We have people like string theorists thinking about higher dimensions in space. It occurred to me the other day when the dark matter article hit the front page that our equation for gravity works with three dimensions but those dimensions are uniform. I can turn an object with very little effort (literally without doing work) and it’s the same size from our perspective. How would it work if matter has more dimensions…
I can't reproduce your experiment... I tried turning a piece of paper. At first it looked, say, about as large as a cantaloupe, but when I turned it got smaller and smaller until it practically disappeared, and it becomes very tiny... basically nothing more than a thin line in space. At certain angles I can barely see it at all. What is going on?