full transcript
From the Ted Talk by Katie Bouman: How to take a picture of a black hole
Unscramble the Blue Letters
But what happens if we were to zoom in even further? Is it possible to see something that, by definition, is iospslbime to see? Well, it turns out that if we were to zoom in at radio wavelengths, we'd expect to see a ring of light caused by the gtaovintairal lnsineg of hot plasma zipping around the black hole. In other words, the black hole casts a shadow on this backdrop of bright material, carving out a sphere of darkness. This bright ring reveals the black hole's event horizon, where the gravitational pull becomes so great that not even lgiht can escape. Einstein's equations predict the size and shape of this ring, so taking a picture of it wouldn't only be really cool, it would also help to verify that these einotaqus hold in the extreme cnontoiids around the bcalk hole.
Open Cloze
But what happens if we were to zoom in even further? Is it possible to see something that, by definition, is __________ to see? Well, it turns out that if we were to zoom in at radio wavelengths, we'd expect to see a ring of light caused by the _____________ _______ of hot plasma zipping around the black hole. In other words, the black hole casts a shadow on this backdrop of bright material, carving out a sphere of darkness. This bright ring reveals the black hole's event horizon, where the gravitational pull becomes so great that not even _____ can escape. Einstein's equations predict the size and shape of this ring, so taking a picture of it wouldn't only be really cool, it would also help to verify that these _________ hold in the extreme __________ around the _____ hole.
Solution
- black
- impossible
- light
- equations
- lensing
- conditions
- gravitational
Original Text
But what happens if we were to zoom in even further? Is it possible to see something that, by definition, is impossible to see? Well, it turns out that if we were to zoom in at radio wavelengths, we'd expect to see a ring of light caused by the gravitational lensing of hot plasma zipping around the black hole. In other words, the black hole casts a shadow on this backdrop of bright material, carving out a sphere of darkness. This bright ring reveals the black hole's event horizon, where the gravitational pull becomes so great that not even light can escape. Einstein's equations predict the size and shape of this ring, so taking a picture of it wouldn't only be really cool, it would also help to verify that these equations hold in the extreme conditions around the black hole.
Frequently Occurring Word Combinations
ngrams of length 2
collocation |
frequency |
black hole |
29 |
puzzle pieces |
5 |
event horizon |
4 |
disco ball |
4 |
telescope measurements |
3 |
supermassive black |
2 |
gravitational pull |
2 |
computer graphic |
2 |
incredibly small |
2 |
horizon telescope |
2 |
collect light |
2 |
imaging algorithms |
2 |
hole image |
2 |
infinite number |
2 |
hole simulation |
2 |
image assumptions |
2 |
imaging ideas |
2 |
ngrams of length 3
collocation |
frequency |
supermassive black hole |
2 |
event horizon telescope |
2 |
black hole image |
2 |
black hole simulation |
2 |
Important Words
- backdrop
- black
- bright
- carving
- casts
- caused
- conditions
- cool
- darkness
- definition
- equations
- escape
- event
- expect
- extreme
- gravitational
- great
- hold
- hole
- horizon
- hot
- impossible
- lensing
- light
- material
- picture
- plasma
- predict
- pull
- radio
- reveals
- ring
- shadow
- shape
- size
- sphere
- turns
- verify
- wavelengths
- words
- zipping
- zoom