4.7 • 1.1K Ratings
🗓️ 10 June 2021
⏱️ 24 minutes
🧾️ Download transcript
Click on a timestamp to play from that location
0:00.0 | Any sufficiently advanced technology is indistinguishable from magic. |
0:07.0 | Welcome everybody to this episode of Into the Impossible with my guest |
0:14.0 | Dr. Delilah Gates. She is one of the world's experts in black hole physics |
0:18.9 | and the mysteries of black holes of which there are many. Delilah, tell me, what is your favorite most fascinating thing about |
0:26.1 | black holes? |
0:27.1 | I think my favorite thing is that black holes are the only object we know about around which light can travel in circular |
0:35.2 | or bound orbit. So there's this region around a black hole where if you could |
0:39.5 | sit in it and aim a light ray just right it would wind around the black hole and you would be able to then see the back of your head. |
0:45.0 | So I think that's pretty fascinating. |
0:49.0 | In particular, this implies that there are actually, whenever you view a black hole there are multiple |
0:54.4 | images of the emission around it stacked on top of each other. |
0:58.5 | That's just amazing. |
1:00.3 | And who was the first person to really think about black holes that they could even possibly be conceived of if not explored in study? |
1:07.5 | The first notion of a black hole actually came from way back in around 1783 when philosopher John Mitchell posited what if you |
1:16.6 | had a star that had such strong gravitational pool that the escape velocity from its surface was the speed of light or greater. |
1:25.0 | And today we obviously when we hear that we think, oh he's describing an event horizon. |
1:30.0 | But of course the idea didn't take off at the time. |
1:33.0 | So everyone was just like, okay, what? |
1:35.6 | Do people really think that dark matter could be made up of black holes? |
1:39.0 | That's something I get asked about quite frequently. |
1:41.9 | Probably not. I don't. I haven't followed literature in this specific |
1:46.3 | topic, but I think the idea more so is black holes can be made of ordinary matter but certainly if there is dark matter that you |
... |
Please login to see the full transcript.
Disclaimer: The podcast and artwork embedded on this page are from Brian Keating, and are the property of its owner and not affiliated with or endorsed by Tapesearch.
Generated transcripts are the property of Brian Keating and are distributed freely under the Fair Use doctrine. Transcripts generated by Tapesearch are not guaranteed to be accurate.
Copyright © Tapesearch 2025.