Crossword puzzle clue "decorative physical changes and a hint to this puzzle's theme"

Decorative physical changes, and a hint to this puzzle's theme

Physical principle whose equation explains the changes in this puzzle's theme entries

Hint (and a hint to this puzzle's theme)

Puzzle invented by Lewis Carroll (and a hint to this puzzle's theme)

Sublime physical performance ... or a hint to this puzzle's circled letters

Gain a monopoly, and a hint to this puzzle's theme and its location

Old term for desktops and laptops, and a hint to this puzzle's theme

Period when one may make radical changes ... and a description of the radical change spelled out in this puzzle's theme