35 lines
1.1 KiB
Markdown
35 lines
1.1 KiB
Markdown
---
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id: task-3
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title: Grow Rochelle Salt Piezoelectric Crystals
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status: To Do
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assignee: []
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created_date: '2026-01-05 23:03'
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labels:
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- chemistry
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- piezoelectric
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- crystals
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dependencies: []
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priority: medium
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---
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## Description
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<!-- SECTION:DESCRIPTION:BEGIN -->
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Grow piezoelectric crystals from kitchen ingredients (cream of tartar + baking soda). Rochelle salt has one of the strongest piezoelectric effects known\!
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This adds a "made from scratch" dimension to the crystal radio project - demonstrating that the piezoelectric property comes from the crystal structure itself, not manufacturing.
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Refer to piezoelectric-circuits-guide.md crystal growing section.
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<!-- SECTION:DESCRIPTION:END -->
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## Acceptance Criteria
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<!-- AC:BEGIN -->
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- [ ] #1 Acquire cream of tartar (200g) and baking soda
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- [ ] #2 Make saturated Rochelle salt solution
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- [ ] #3 Grow seed crystals (3-7 days)
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- [ ] #4 Grow main crystal from seed (1-4 weeks)
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- [ ] #5 Apply electrodes (conductive paint or foil)
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- [ ] #6 Test piezoelectric response with LED/multimeter
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- [ ] #7 Compare to commercial ceramic piezo
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<!-- AC:END -->
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