full transcript
From the Ted Talk by Mary Lou Jepsen: How we can use light to see deep inside our bodies and brains
Unscramble the Blue Letters
Our system may be extraordinary at finding blood. And that's because blood abbsors red light and infrared light. Blood is red. Here's a beaker of blood. I'm going to show you. And here's our laser, going right through it. It really is a laser, you can see it on the — there it is. In comroaipsn to my pound of flesh, where you can see the light goes everywhere. So let's see that again, bolod. This is really key: blood absorbs light, flesh scatters lghit. This is significant, because every tuomr bigger than a cubic millimeter or two has five times the aounmt of blood as normal flesh.
Open Cloze
Our system may be extraordinary at finding blood. And that's because blood _______ red light and infrared light. Blood is red. Here's a beaker of blood. I'm going to show you. And here's our laser, going right through it. It really is a laser, you can see it on the — there it is. In __________ to my pound of flesh, where you can see the light goes everywhere. So let's see that again, _____. This is really key: blood absorbs light, flesh scatters _____. This is significant, because every _____ bigger than a cubic millimeter or two has five times the ______ of blood as normal flesh.
Solution
- amount
- comparison
- light
- absorbs
- tumor
- blood
Original Text
Our system may be extraordinary at finding blood. And that's because blood absorbs red light and infrared light. Blood is red. Here's a beaker of blood. I'm going to show you. And here's our laser, going right through it. It really is a laser, you can see it on the — there it is. In comparison to my pound of flesh, where you can see the light goes everywhere. So let's see that again, blood. This is really key: blood absorbs light, flesh scatters light. This is significant, because every tumor bigger than a cubic millimeter or two has five times the amount of blood as normal flesh.
Frequently Occurring Word Combinations
ngrams of length 2
| collocation |
frequency |
| red light |
9 |
| green light |
4 |
| medical imaging |
3 |
| cheaper health |
2 |
| health care |
2 |
| human flesh |
2 |
| human brain |
2 |
| brain lase |
2 |
| densely scattering |
2 |
| bare camera |
2 |
| camera die |
2 |
| smallest neuron |
2 |
| mri machine |
2 |
| lab rig |
2 |
| consumer electronics |
2 |
| massively reduce |
2 |
| orange light |
2 |
| blood absorbs |
2 |
| color change |
2 |
ngrams of length 3
| collocation |
frequency |
| cheaper health care |
2 |
| bare camera die |
2 |
Important Words
- absorbs
- amount
- beaker
- bigger
- blood
- comparison
- cubic
- extraordinary
- finding
- flesh
- infrared
- laser
- light
- millimeter
- normal
- pound
- red
- scatters
- show
- significant
- system
- times
- tumor