Crystal Frequencies
Quartz lattices and gentle fieldwork: orientation, safe stimulation, sensing, and photography.
Quartz Basics
FoundationsQuartz is piezoelectric: mechanical stress produces charge, and applied fields cause tiny strains. Some gems also show pyroelectric behavior (temperature → charge). Orientation, symmetry, and defects shape response and stability.
- Node sensitivity: tap & listen for clear ring vs. dull response.
- Defects & inclusions: can pin domains, shifting Q and drift.
Cuts & Orientation
GeometryAxes & Faces
Quartz has x/y/z (a/c) axes. Response depends on how faces align to field or stress—mark samples to keep track.
Common Cuts
AT/BT watch-crystal style cuts tune temperature behavior; experimenters can simply note face/edge orientation for repeatability.
Measuring & Sensing
ReadoutLow-Tech
- Contact mic or piezo disc to hear micro-vibrations during taps or slow ramps.
- Cross-polarized light photos to reveal strain/color zoning.
- Basic capacitance checks (LCR meter) near electrode masks.
Nice Tools
- Oscilloscope for audio-range signals (AC coupling, low gain).
- Frequency counter for stable resonators (if you bond the crystal properly).
- Thermometer—log temperature; quartz drifts with heat.
Safe Stimulation
Low-Voltage- Audio coil (very small): place a tiny coil or exciter near crystal; use low volume sine tones.
- Electrode mask: copper tape on acrylic above the crystal; apply ≤12 V DC via series resistor.
- Dwell & cool: short sessions, then rest. Comfort > intensity.
- No HV/RF: avoid high voltage or RF unless shielded, measured, and you know the risks.
Patterning & Encoding
Field ShapingGeometries
Rings guide equipotentials; spirals add gradients; grids create arrays of maxima/minima. Try mirrored vs. chiral spirals.
Observables
Dust/toner motion, small capacitance changes, and contact-mic textures. Photograph each pattern with notes.
Experiments
Try ThisCross-Polar Map
- LED panel + two polarizer sheets; place crystal between.
- Rotate the analyzer and photograph fringe patterns.
Mask Compare
- Place ring, spiral, and grid copper masks on acrylic above crystal.
- Apply ≤12 V DC via series resistor; observe dust/toner motion.
Audio Probe
- Tiny exciter near crystal; sweep 100–1000 Hz at very low level.
- Listen/record for resonant hints with a contact mic.
Temperature Drift
- Record response at ambient; then with gentle hand warmth.
- Note frequency/phase shifts or capacitance changes.
Care & Ethics
Respect- Use low voltages and current-limiting. Keep coils cool; avoid continuous high power.
- No adhesives/solvents into fractures. Don’t shock-heat or quench crystals.
- Mind provenance; respect cultural/sacred objects and collection laws.
- Educational content; not medical advice or claims of therapeutic effect.
Glossary (Quick)
ReferencePiezoelectricity
Stress ↔ charge coupling in certain crystals (e.g., quartz).
Pyroelectricity
Temperature change → charge in polar crystals.
Orientation (Axes)
Crystal directions (a/c) that set coupling strength.
Q-Factor
Resonance sharpness; higher Q gives cleaner peaks.
FAQ
ClarityDo I need lab-grade crystals?
No. Small tumbled pieces work for optics/dust tests; cut plates are best for precise resonance work.
What voltage is safe?
Stay in low-voltage DC (≈9–12 V) with a series resistor. For audio coils, keep levels modest and sessions short.
Can I combine with cymatics?
Yes—drive a plate and place crystals at nodes/antinodes to see interaction. Keep levels low.
How do I log well?
Note sample ID, orientation marks, mask geometry, voltage/current limit, temperature, frequency, photos/audio files.
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