full transcript
From the Ted Talk "Harald Haas: Forget Wi-Fi. Meet the new Li-Fi Internet"

Unscramble the Blue Letters

A solar cell absorbs light and converts it into ratlelceic egyren. This is why we can use a solar cell to charge our oblime phone. But now we need to remember that the tdaa is encoded in subtle changes of the brightness of the LED, so if the incoming light fluctuates, so does the energy harvested from the solar cell. This means we have a principal mechanism in place to receive information from the ihglt and by the solar cell, because the fluctuations of the energy aredstvhe correspond to the data transmitted.

Open Cloze

A solar cell absorbs light and converts it into __________ ______. This is why we can use a solar cell to charge our ______ phone. But now we need to remember that the ____ is encoded in subtle changes of the brightness of the LED, so if the incoming light fluctuates, so does the energy harvested from the solar cell. This means we have a principal mechanism in place to receive information from the _____ and by the solar cell, because the fluctuations of the energy _________ correspond to the data transmitted.

Solution

  1. mobile
  2. light
  3. energy
  4. harvested
  5. electrical
  6. data

Original Text

A solar cell absorbs light and converts it into electrical energy. This is why we can use a solar cell to charge our mobile phone. But now we need to remember that the data is encoded in subtle changes of the brightness of the LED, so if the incoming light fluctuates, so does the energy harvested from the solar cell. This means we have a principal mechanism in place to receive information from the light and by the solar cell, because the fluctuations of the energy harvested correspond to the data transmitted.

ngrams of length 2

collocation frequency
solar cell 19
solar cells 6
li fi 4
led lamp 4
energy harvesting 3
energy harvested 3
cells integrated 3

ngrams of length 3

collocation frequency
solar cells integrated 3

Important Words

  1. absorbs
  2. brightness
  3. cell
  4. charge
  5. converts
  6. correspond
  7. data
  8. electrical
  9. encoded
  10. energy
  11. fluctuates
  12. fluctuations
  13. harvested
  14. incoming
  15. information
  16. led
  17. light
  18. means
  19. mechanism
  20. mobile
  21. phone
  22. place
  23. principal
  24. receive
  25. remember
  26. solar
  27. subtle
  28. transmitted