full transcript

From the Ted Talk by Wendy Freedman: This telescope might show us the beginning of the universe

Unscramble the Blue Letters

So, the making of the mirrors in this telescope is also fascinating in its own right. Take chunks of gslas, melt them in a furnace that is itself rotating. This happens underneath the football stadium at the usretniviy of Arizona. It's tucked away under 52,000 seats. Nobody know it's happening. And there's ealsitlsney a rotating cauldron. The mirrors are cast and they're cooled very slwloy, and then they're polished to an exquisite precision. And so, if you think about the prcosiein of these mirrors, the bumps on the mirror, over the entire 27 feet, amount to less than one-millionth of an inch. So, can you visualize that? Ow!

Open Cloze

So, the making of the mirrors in this telescope is also fascinating in its own right. Take chunks of _____, melt them in a furnace that is itself rotating. This happens underneath the football stadium at the __________ of Arizona. It's tucked away under 52,000 seats. Nobody know it's happening. And there's ___________ a rotating cauldron. The mirrors are cast and they're cooled very ______, and then they're polished to an exquisite precision. And so, if you think about the _________ of these mirrors, the bumps on the mirror, over the entire 27 feet, amount to less than one-millionth of an inch. So, can you visualize that? Ow!

Solution

  1. glass
  2. slowly
  3. precision
  4. essentially
  5. university

Original Text

So, the making of the mirrors in this telescope is also fascinating in its own right. Take chunks of glass, melt them in a furnace that is itself rotating. This happens underneath the football stadium at the University of Arizona. It's tucked away under 52,000 seats. Nobody know it's happening. And there's essentially a rotating cauldron. The mirrors are cast and they're cooled very slowly, and then they're polished to an exquisite precision. And so, if you think about the precision of these mirrors, the bumps on the mirror, over the entire 27 feet, amount to less than one-millionth of an inch. So, can you visualize that? Ow!

Frequently Occurring Word Combinations

ngrams of length 2

collocation frequency
hubble space 5
solar system 3
giant magellan 3
space telescope 3
dark matter 3
andes mountains 2
night sky 2
existing telescopes 2
magellan telescope 2
cosmic dawn 2
black holes 2
full moon 2
planets orbiting 2

ngrams of length 3

collocation frequency
hubble space telescope 3

Important Words

  1. amount
  2. arizona
  3. bumps
  4. cast
  5. cauldron
  6. chunks
  7. cooled
  8. entire
  9. essentially
  10. exquisite
  11. fascinating
  12. feet
  13. football
  14. furnace
  15. glass
  16. happening
  17. inch
  18. making
  19. melt
  20. mirror
  21. mirrors
  22. polished
  23. precision
  24. rotating
  25. seats
  26. slowly
  27. stadium
  28. telescope
  29. tucked
  30. university
  31. visualize