The parts of an "all-silver" flute that are not made from silver include:
- Pivot screws
- Hinge rods
- Hinge pins (except flutes with a pinless mechanism)
- Adjusting screws (when used)
- Pad retainers or grommets vary - some are silver, some not.
- Headjoint stopper and cork
- Felt and cork bumpers/silencers
Because this is a flute forum, I'll leave the physics discussion of energy vs. matter (E=mc squared) to some other forum.
"Never give a flute player a screwdriver."