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  1. Standard electrical circuit symbols
  2. Snake skin, SEM
  3. Coloured SEM of human embryo at 16-cell stage
  4. Fossils, 18th century artwork
  5. Viral throat infection, artwork
  6. Human evolution, artwork
  7. Pascal's calculator, 17th Century artwork
  8. Siberian Ribbons - USGS Earth as Art
  9. V-2 rocket launch in USA
  10. Canada, Mackenzie Mountains, Ravensthroat River. Aurora Borialis
  11. Stethoscope
  12. DNA
  13. Blood pressure gauge
  14. The Sun
  15. Blood samples
  16. Canada balsam
  17. Manual worker working in a foundry
  18. NASA, Houston, Texas
  19. White noise, conceptual artwork
  20. Mineralogie III
  21. Gaulard transformer, 19th century
  22. Insulin receptor, molecular model
  23. Welders Goggles I
  24. Zasite Stone With Rudby
  25. x-ray of head
  26. Spilled Paint - USGS Earth as Art
  27. Refraction of light by lenses
  28. Halophiles Phenomena, Dead Sea - Aerial Photograph
  29. Dial calipers
  30. Chromaticity diagram
  31. Artwork of Mars Polar Lander descending onto Mars
  32. Human head anatomy, artwork
  33. Bacteria infecting a macrophage, SEM
  34. 2s electron orbital
  35. Skin pigmentation in Addison's disease
  36. Heart anatomy, 19th Century illustration
  37. Historical medicinal products
  38. Placing of electrodes for ECG, artwork
  39. Durer's world map, 1515
  40. The docking of SpaceX Dragon to the International Space Station above Earth
  41. Nerve cell, computer artwork
  42. Galileo using a telescope
  43. Anatomy of nasal sinuses
  44. Man using laptop computer
  45. Microscopic view of bone fibre
  46. Satellite view of city lights in several European and Nordic cities
  47. Internal brain anatomy, artwork
  48. Antique microscope