11. Electronic transitions of gaseous molecules will show both vibrational and rotational fine structure . 12. Where " T " is the fine structure constant as the development parameter. 13. The air board's fine structure can lead to incongruous results. 14. The analog of the fine structure constant for gravitation is the gravitational coupling constant. 15. "It's hard to imagine the full ramifications of changes to the fine structure constant," 16. The positive energies do account accurately for the fine structure . 17. Similarly, a number known as the fine structure constant characterizes the strength of electromagnetic forces. 18. These caves have very fine structures of dripstones i . e . stalactites and stalagmites. 19. It is possible to define a unitless fine structure constant for electromagnetism, weak, and strong interactions. 20. In 1926 Llewellyn Thomas relativistically recomputed the doublet separation in the fine structure of the atom.