full transcript
From the Ted Talk by Harald Haas: Wireless data from every light bulb
Unscramble the Blue Letters
Once again. Still don't believe? It is this light that transmits this high-definition video in a split stream. And if you look at the lhigt, it is illuminating as you would expect. You don't notice with your human eye. You don't notice the sblute changes in the amplitude that we impress onto this light bulb. It's serving the prupsoe of illumination, but at the same time, we are able to transmit this data. And you see, even light from the ceiling comes down here to the receiver. It can ignore that csatnont light, because all the receiver's interested in are subtle changes. You also have a critical question now, and you say, "Okay, do I have to have the light on all the time to have this working?" And the answer is yes. But, you can dim down the light to a level that it appears to be off. And you are still able to tanmisrt data — that's possible.
Open Cloze
Once again. Still don't believe? It is this light that transmits this high-definition video in a split stream. And if you look at the _____, it is illuminating as you would expect. You don't notice with your human eye. You don't notice the ______ changes in the amplitude that we impress onto this light bulb. It's serving the _______ of illumination, but at the same time, we are able to transmit this data. And you see, even light from the ceiling comes down here to the receiver. It can ignore that ________ light, because all the receiver's interested in are subtle changes. You also have a critical question now, and you say, "Okay, do I have to have the light on all the time to have this working?" And the answer is yes. But, you can dim down the light to a level that it appears to be off. And you are still able to ________ data — that's possible.
Solution
- constant
- light
- subtle
- transmit
- purpose
Original Text
Once again. Still don't believe? It is this light that transmits this high-definition video in a split stream. And if you look at the light, it is illuminating as you would expect. You don't notice with your human eye. You don't notice the subtle changes in the amplitude that we impress onto this light bulb. It's serving the purpose of illumination, but at the same time, we are able to transmit this data. And you see, even light from the ceiling comes down here to the receiver. It can ignore that constant light, because all the receiver's interested in are subtle changes. You also have a critical question now, and you say, "Okay, do I have to have the light on all the time to have this working?" And the answer is yes. But, you can dim down the light to a level that it appears to be off. And you are still able to transmit data — that's possible.
Frequently Occurring Word Combinations
ngrams of length 2
collocation |
frequency |
wireless data |
5 |
light bulbs |
5 |
radio waves |
4 |
visible light |
4 |
base stations |
3 |
light spectrum |
3 |
led light |
3 |
transmit data |
3 |
data transmission |
3 |
million cellular |
2 |
cellular radio |
2 |
mobile phone |
2 |
transmit wireless |
2 |
remote controls |
2 |
data stream |
2 |
light bulb |
2 |
desk lamp |
2 |
illumination device |
2 |
ngrams of length 3
collocation |
frequency |
visible light spectrum |
3 |
million cellular radio |
2 |
transmit wireless data |
2 |
led light bulbs |
2 |
Important Words
- amplitude
- answer
- appears
- bulb
- ceiling
- constant
- critical
- data
- dim
- expect
- eye
- human
- ignore
- illuminating
- illumination
- impress
- interested
- level
- light
- notice
- purpose
- question
- receiver
- serving
- split
- stream
- subtle
- time
- transmit
- transmits
- video
- working