World 5 · Quartz and Beyond · 13 min · PRO
A crystal that squeezes back
Piezoelectricity and the 32 768 Hz fork
PRO · Clockwork & Time
World 5: Quartz and Beyond is part of PRO
The first world of Clockwork & Time is free. PRO opens the other 24 lessons in 6 worlds — simulations, quizzes and all.
PRO includes
- All 60 labs — every world, every lesson
- Practice exams and certificates
$8.33/mo, billed yearly ($99.99) · or $39.99 monthly