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  1. Utility pipes, artwork
  2. Digital blood pressure monitor
  3. Low angle view of communications towers, Kuwait Towers, Kuwait City, Kuwait
  4. Perpetual motion machine, 19th century
  5. Computer and mouse with flora design
  6. 19th Century amphibious vehicle, artwork
  7. Light bulb filament
  8. Locomotive, 1855, French Colored Engraving
  9. Women working in a munitions factory in 1915
  10. Oscilloscope trace
  11. Micro electronics
  12. Concentrating Solar Power Plant
  13. Circuit Board
  14. Radio telescope at sunset, Stanford, California
  15. Palmtop
  16. Oil refining process
  17. Telecommunication Towers near Bulls Head, Dingle Peninsula, County Kerry, Ireland
  18. Napier Lion Engine
  19. Painting of a Weather Satellite
  20. Control panel
  21. Recording thumbprint
  22. Vieques, Puerto Rico, A laptop is sitting in the middle of an unmade hotel bed
  23. Artificial heart, 19th century
  24. Computer monitor
  25. Enigma, German Cipher Machine Created Codes For Sending Messages During WWII
  26. Cut-away artwork of a windmill for grinding corn
  27. Genome sequencing machine
  28. Parkes radio telescope at night, Parkes, NSW, Australia.
  29. Light bulb
  30. Telecommunication Towers near Bulls Head, Dingle Peninsula, County Kerry, Ireland
  31. Garnerin's parachute design, 1797
  32. Electrical cables
  33. Refractor telescope, 1928
  34. Hornblower's engine
  35. Printing Press at Le Petit Journal, created by H, Marinoni, 1860s
  36. Early television with a viewing mirror that reflects the image of a picture tube
  37. Computer graphic line graph, full frame
  38. Concentrating Solar Power Plant
  39. Measuring electric current
  40. United States, Satellite Dish
  41. Actress Norma Shearer inspects a sound proof camera
  42. United States, California, Owens Valley Radio Observatory (OVRO), Radio Telescope
  43. Chain and lock on laptop computer
  44. Solar cell
  45. Worker examining empty airplane
  46. Hydraulics Explained
  47. Solar panels
  48. 19th-century mining machine