11. With nitric acid it yields thulium nitrate, or Tm ( NO 3 ) 3. 12. Thulium 's atomic symbol was once Tu, but this was changed to Tm.13. His thesis was " The Radioactive Decay of Hafnium and Thulium Isotopes ". 14. Thulium 's only known oxide is Tm ( OH ) 3 exhibiting a fading reddish color.15. Thulium felt these bands looked down on them because of the different style of music they played.16. Thulium would continue touring heavily, taking short breaks to record a few songs here and there.17. Different fraxel systems use 10, 600 nm, 1550 nm Erbium, and 1927 nm Thulium lasers. 18. Ytterbium, holmium, thulium , and erbium are other common " dopants " in solid-state lasers. 19. The primary decay products before 166 Er are holmium isotopes, and the primary products after are thulium isotopes. 20. Thulium is used in x-ray tubes and neodymium is used in high strength / high grade magnets.
