full transcript
"From the Ted Talk by Bill Gross: A solar energy system that tracks the sun"

Unscramble the Blue Letters

So we really set out on a path to try and make the lowest cost possible. We built a huge mctamaitehal model of how a Stirling engine works. We applied the genetic algorithm. We got the results from that for the oiptmal engine. We built engines — so we built 100 different engines over the last two years. We measured each one, we readjusted the model to what we msreeuad, and then we led that to the current prototype. It led to a very compact, inexpensive engine, and this is what the eignne looks like.

Open Cloze

So we really set out on a path to try and make the lowest cost possible. We built a huge ____________ model of how a Stirling engine works. We applied the genetic algorithm. We got the results from that for the _______ engine. We built engines — so we built 100 different engines over the last two years. We measured each one, we readjusted the model to what we ________, and then we led that to the current prototype. It led to a very compact, inexpensive engine, and this is what the ______ looks like.

Solution

  1. mathematical
  2. optimal
  3. measured
  4. engine

Original Text

So we really set out on a path to try and make the lowest cost possible. We built a huge mathematical model of how a Stirling engine works. We applied the genetic algorithm. We got the results from that for the optimal engine. We built engines — so we built 100 different engines over the last two years. We measured each one, we readjusted the model to what we measured, and then we led that to the current prototype. It led to a very compact, inexpensive engine, and this is what the engine looks like.

ngrams of length 2

collocation frequency
stirling engine 9
solar energy 9
solar cells 7
robert stirling 5
hot air 4
genetic algorithms 4
genetic algorithm 4
air engine 4
solar cell 3
internal combustion 3
hot water 3
high school 3
heat engine 3
energy crisis 3
collect light 3

ngrams of length 3

collocation frequency
hot air engine 4

Important Words

  1. algorithm
  2. applied
  3. built
  4. compact
  5. cost
  6. current
  7. engine
  8. engines
  9. genetic
  10. huge
  11. inexpensive
  12. led
  13. lowest
  14. mathematical
  15. measured
  16. model
  17. optimal
  18. path
  19. prototype
  20. readjusted
  21. results
  22. set
  23. stirling
  24. works
  25. years