21. The conventional electrical units are " quasi-fundamental physical constants . 22. :I've seen that in tables of physical constants before. 23. One such dimensionless physical constant is the fine-structure constant. 24. Any ratio between physical constants of the same dimensions results in a dimensionless physical constant . 25. This elementary charge is a fundamental physical constant . 26. Others however reject the possibility of measuring a change in dimensionful physical constants under any circumstance. 27. Each one would correspond to a different condition of space-time, with a different set of physical constants . 28. :The speed of light in a vacuum appears to be a universal physical constant of the universe. 29. In the bubble universe theory, there is an infinite variety of universes, each with different physical constants . 30. It is also possible to predict solubility from other physical constants such as the enthalpy of fusion.