full transcript

From the Ted Talk by Harald Haas: Wireless data from every light bulb

Unscramble the Blue Letters

And one of the issues is ciaaptcy. The way we transmit wireless data is by using electromagnetic waves — in particular, riado waves. And radio waves are limited. They are scarce; they are expensive; and we only have a certain range of it. And it's this littomiain that doesn't cope with the demand of wireless data transmissions and the number of btyes and data which are transmitted every month. And we are simply running out of spectrum. There's another problem. That is efficiency. These 1.4 million cellular radio masts, or base stations, consume a lot of erengy. And mind you, most of the energy is not used to tnasrmit the radio wveas, it is used to cool the base stations. Then the efficiency of such a base station is only at about five percent. And that creates a big problem. Then there's another issue that you're all arwae of. You have to switch off your mobile phone during flights. In hospitals, they are security issues. And security is another issue. These radio waves penetrate through wllas. They can be intercepted, and somebody can make use of your network if he has bad itetinnnos.

Open Cloze

And one of the issues is ________. The way we transmit wireless data is by using electromagnetic waves — in particular, _____ waves. And radio waves are limited. They are scarce; they are expensive; and we only have a certain range of it. And it's this __________ that doesn't cope with the demand of wireless data transmissions and the number of _____ and data which are transmitted every month. And we are simply running out of spectrum. There's another problem. That is efficiency. These 1.4 million cellular radio masts, or base stations, consume a lot of ______. And mind you, most of the energy is not used to ________ the radio _____, it is used to cool the base stations. Then the efficiency of such a base station is only at about five percent. And that creates a big problem. Then there's another issue that you're all _____ of. You have to switch off your mobile phone during flights. In hospitals, they are security issues. And security is another issue. These radio waves penetrate through _____. They can be intercepted, and somebody can make use of your network if he has bad __________.

Solution

  1. walls
  2. radio
  3. waves
  4. aware
  5. transmit
  6. energy
  7. capacity
  8. limitation
  9. bytes
  10. intentions

Original Text

And one of the issues is capacity. The way we transmit wireless data is by using electromagnetic waves — in particular, radio waves. And radio waves are limited. They are scarce; they are expensive; and we only have a certain range of it. And it's this limitation that doesn't cope with the demand of wireless data transmissions and the number of bytes and data which are transmitted every month. And we are simply running out of spectrum. There's another problem. That is efficiency. These 1.4 million cellular radio masts, or base stations, consume a lot of energy. And mind you, most of the energy is not used to transmit the radio waves, it is used to cool the base stations. Then the efficiency of such a base station is only at about five percent. And that creates a big problem. Then there's another issue that you're all aware of. You have to switch off your mobile phone during flights. In hospitals, they are security issues. And security is another issue. These radio waves penetrate through walls. They can be intercepted, and somebody can make use of your network if he has bad intentions.

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

  1. aware
  2. bad
  3. base
  4. big
  5. bytes
  6. capacity
  7. cellular
  8. consume
  9. cool
  10. cope
  11. creates
  12. data
  13. demand
  14. efficiency
  15. electromagnetic
  16. energy
  17. flights
  18. hospitals
  19. intentions
  20. intercepted
  21. issue
  22. issues
  23. limitation
  24. limited
  25. lot
  26. masts
  27. million
  28. mind
  29. mobile
  30. month
  31. network
  32. number
  33. penetrate
  34. percent
  35. phone
  36. problem
  37. radio
  38. range
  39. running
  40. security
  41. simply
  42. spectrum
  43. station
  44. stations
  45. switch
  46. transmissions
  47. transmit
  48. transmitted
  49. walls
  50. waves
  51. wireless