Fabula
Object
Object

Blackboard with Temporal Displacement Diagram

A dark slate blackboard featuring abstract geometric diagrams representing temporal displacement principles, contrasting with the biological reference diagrams on the same wall.
2 appearances

Purpose

Visual documentation of temporal displacement equations for the Doctor's critical experiment, serving as a working reference during the crisis.

Significance

Symbolizes the Doctor’s prioritization of his scientific mission over his partnership with Sarah, becoming a physical manifestation of their growing discord during the containment crisis.

Appearances in the Narrative

When this object appears and how it's used

2 moments
S11E6 · Invasion of the Dinosaurs Part 2
Sarah shifts allegiance to Yates

The chalk diagram on the blackboard becomes a backdrop to the conflict, its temporal equations ignored by Sarah as she focuses on the immediate human stakes. It visually contrasts abstract science with Sarah’s practical concern about eviction.

Before: Present on the wall; visible during Yates’ dialogue
After: Unchanged; remains as witness to the failed collaboration
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S11E6 · Invasion of the Dinosaurs Part 2
Brigadier confronts Doctor about secret project

The blackboard with temporal displacement diagrams dominates one wall, its angular equations a silent witness to the Doctor’s unauthorized research. The Brigadier’s arrival forces confrontation with the abstract, theoretical nature of his work, making the blackboard a literal and symbolic battleground of institutional vs. scientific authority.

Before: Visible, cluttered with complex temporal displacement equations and symbols, central to the Doctor’s experimental preparations.
After: Remains in place, its contested content now exposed to an institutional representative, heightening conflict.
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