Germanium Crystal Strip

Delicate strip of germanium crystal embedded in the control sphere. The Doctor directs Anne Travers to detach it with steady hands during tense calibration in the cramped Goodge Street Laboratory. This precise removal stabilizes frequency variations, marking a critical technical step under high pressure.

1 appearances

Purpose

Detach during control sphere calibration to stabilize frequency variations

Significance

Enables circuit completion that repurpose Yeti control against the Great Intelligence, providing first victory toward rescuing companions and disrupting the mind-draining scheme

Appearances in the Narrative

When this object appears and how it's used

1 moments

S5E27 · The Web of Fear Part 5

Doctor and Anne complete the circuit

The Doctor directs Anne to detach this delicate germanium crystal strip from the control sphere, a precise maneuver enabling attachment of collector and emitter; its removal pivots the device from Yeti control to potential human weapon, stabilizing erratic frequencies in their desperate counterplan.

Before: Embedded within the control sphere, contributing to unstable frequencies

After: Detached from sphere, positioned for circuit reconfiguration

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