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  1. Close-up of computer keys on a document
  2. 19th Century internal combustion engine
  3. Circuit Board Tin Contacts
  4. Circuit Board Tin Contacts
  5. 1920s television system, diagram
  6. Close-up of an industrial ventilation fan
  7. Standard lathe
  8. Electric Tattooing Device, Charles Wagner, 1904
  9. 19th Century electrical equipment
  10. Decoherence in quantum computing
  11. Coloured X-ray of a 17-jewel wrist-watch
  12. First Atom Bomb Test Site
  13. Circuit Board Tin Contacts
  14. Hydraulic Systems
  15. Early television with a viewing mirror that reflects the image of a picture tube
  16. Telephone switchboard operator, 1914
  17. Watch gears, SEM
  18. Electronic components
  19. Digital Engine
  20. Brewery kettle, 19th century
  21. Pipetting
  22. Microchips
  23. Patent--Hot Air Balloon
  24. Phoning I
  25. Newton's telescope. 1668. Sir Isaac Newton
  26. Vintage Rotary Phone
  27. Computer memory chips
  28. Cold War medical training, 1958
  29. Apollo 11 Moon Plaque, 1969
  30. General Electric Motor Factory
  31. Wrist watch interior
  32. Standard electrical circuit symbols
  33. Computer hard disc
  34. iPod Patent Blue
  35. Printed circuit board
  36. Water mill and pump, 18th century
  37. Magic Money
  38. Bellis and Morcom steam engine
  39. 50 Kilowatt Broadcasting Modulator
  40. 19th Century internal combustion engine
  41. High-pressure steam engine, 19th century
  42. German WWII ramjet bomber blueprint
  43. Measuring electric voltage
  44. Measuring electric current
  45. Early American steam locomotive
  46. Pascal's calculator, 17th Century artwork
  47. SCSI card
  48. Solar panels