make-the-invisible-visible · autonomous run 043 · 2026-08-17 21:23
⌖ Longwave transmitter closures · Droitwich Transmitting Station, Worcestershire, UK · 2014-2025
E1189 : Survival Function
The macroscopic thermal equilibrium of a national power grid is entirely hostage to the microscopic material failure rate of an irreplaceable, obsolete glass vacuum tube.
Mechanical counterweight drops logging discrete failure steps in transmission infrastructure. · motion: snapping sequentially as structural load transfers to fewer surviving nodes
wall text
At Droitwich, the UK's Radio Teleswitch Service relies on a dwindling cache of hand-blown E1189 glass transmitter valves. This installation transposes the valves' Kaplan-Meier survival estimator into a physical mechanical load. Heavy suspended weights represent the surviving broadcast infrastructure; when a valve fails, a weight drops, transferring increased mechanical tension to fewer surviving cables according to Greenwood's variance formula. As legacy Economy 7 meters are replaced by smart meters, auxiliary lines are severed to mimic right-censoring. The physical tension directly governs an adjacent array of electric storage heaters, linking the microscopic filament wear of obsolete glass vacuum tubes to national grid stability.
shown: Installed directly in the active sheep-grazing fields beneath the Droitwich T-aerial, strictly accessible only during the final months of the 198 kHz broadcast.
shown: Installed directly in the active sheep-grazing fields beneath the Droitwich T-aerial, strictly accessible only during the final months of the 198 kHz broadcast.
anchor facts used
- The Droitwich transmitting station broadcasts on 198 kHz using a dwindling stockpile of E1189 thermionic glass valves that ceased manufacture decades ago.
- The 198 kHz carrier wave encodes the Radio Teleswitch Service (RTS) via phase-shift keying.
- RTS actively controls load-shedding and off-peak storage heating (Economy 7) for approximately 900,000 UK households.
mechanism
- Kaplan-Meier survival estimator — A sprawling mechanical array drops massive lead weights at calculated intervals to physically construct the step-function survival curve of the remaining transmitter inventory.
1. Step-Function Mapping - Right-censoring (survival analysis) — Tension wires representing household receivers that fail independently of the broadcast loss are prematurely severed from the array, removing their mass from the statistical mechanical load without triggering a full step drop.
2. Data Truncation - Hazard function (failure rate) — The ambient thermal radiation emitted by a localized grid of industrial heating elements is inversely modulated against the array's surviving physical load, simulating the impending thermal deficit.
3. Risk Modulation - Greenwood's formula (variance of the survival estimate) — The lead weights are suspended by braided steel cables whose tensile integrity is systematically degraded by acid drips proportional to the calculated statistical variance, guaranteeing violent structural failure as the confidence interval widens.
4. Variance Collapse
lineage
- Tantalum Memorial (Harwood, Wright, Yokokoji) — Extends their exploration of the ghosts within telephony infrastructure into the brute-force physics of high-power ground-wave transmission.
- A Study of the Radio Teleswitch Service (UK Department for Energy Security and Net Zero) — Translates the report's bureaucratic risk assessments and grid-failure demographics into a literal, spatial tension diagram of catastrophic collapse.
- The Clock (Christian Marclay) — Subverts Marclay's celebration of continuous cultural time by engineering the hard, material expiration of the UK's legacy national time standard.
curatorial qa (machine verdict, unedited)
SCORE 2/5 after 2 attempt(s)
READS: The physical dropping of heavy ballast into wet earth effectively stages the discrete step-drop of survival analysis.
FAILS: The connection between the dropping weights, the E1189 glass valve's wear, and off-peak grid heating equilibrium remains purely conceptual and invisible in the action.
READS: The physical dropping of heavy ballast into wet earth effectively stages the discrete step-drop of survival analysis.
FAILS: The connection between the dropping weights, the E1189 glass valve's wear, and off-peak grid heating equilibrium remains purely conceptual and invisible in the action.
spec: antigravity agent · keyframe/artifact: gemini-3.1-flash-image · video: veo-3.1 image-to-video · qa+wall text: gemini-3.7-flash watching the render · 49.4s total