The following text is the paragraph associated with the Quarks visual on the poster:

Quarks
predicted 1961 (Gell-Mann, Ne'eman) confirmed 1964 - 1998

• fundamental particles which, with gluons, make up the nuclear material
  
• mass = ranges from 5 MeV to 174,000 MeV (up = 5, down = 7 MeV, top
  
• quark = 174.3 GeV) (MeV = mega-electronvolts, GeV = giga-electronvolts)
  
• diameter = less than 10-15 mm (less than 1/1000 of proton's diameter)
  
• electromagnetic charge: up = +²/3, down = -¹/3
  
• up and down types are common in normal atoms, the other four types
  (top, bottom, charmed, strange) can only be produced at high energies
  and remain in existence for short times
  
• come in 3 "colors" - red, blue, green (a metaphor to explain interactions)
  
• all 3 colors together become "color neutral" (proton, neutron)
  
• anti-quarks come in 3 "colors" - anti-red, anti-blue, anti-green
  
• color + anti-color are also "color neutral" (meson)
  
• all observed particles do not exhibit color; they are color neutral