THRESHOLD COMPLEX EXPLORATION LOG
Designation / Log ID: 56-A53
Apparent Date/Time: 01 October 2026 / 09:11 (local) — secondary stamp reads 21:47 04 March 1973
Entry Method: Single steel door marked “B-56 PROJECTION BOOTH – LAMP HOLD”. Exterior clear aperture measures 0.91 m × 2.04 m. Interior aperture measures 1.12 m × 1.86 m on entry and 0.68 m × 2.31 m on exit.
Environmental Baseline
Lighting: tungsten lamp spill through three port shutters, color temperature measured at 2860 K. Intensity constant at 18 lux.
Ambient temperature: 27.6 °C. Humidity: 34 %.
Background sound: projector motor at 24 Hz. Baseline reading 22 dB.
Air movement: none detected. Barometric pressure 1011.8 hPa on entry; 1024.6 hPa after 2.4 m of travel.
Spatial Observations
Gallery estimated 14 m long by 4.6 m wide by 3.1 m high. Laser measurement returns 19.2 m long by 3.8 m wide by 2.4 m high.
Floor: poured concrete with painted cable lane. Lane width measures 140 mm. Surface remains uniform under repeated contact.
Walls: painted block with three projection ports and one rewind bench. Paint thickness measures 0.4 mm. Surface remains uniform under repeated contact.
Ceiling: exposed slab with six lamp housings. Housing count remains six after nine visual inventories.
Repeating motif: every 1.2 m a film can occupies the bench rail. Can diameter measures 380 mm. Finish is identical across all units.
Anomalies
Visual inventory of projection ports returns 3. Physical inventory returns 3. Measured open-shutter count equals 0 while calculated residual frame occupancy across the same bank equals 412.
Floor remains level under spirit level. Measured residual emulsion dust on the cable lane slopes 1.6° toward the rewind bench. Slope reverses after 4 minutes of observation without change in physical orientation.
Posted lamp plaque reads 3 LAMPS / 0 RUN. Measured combined draw current at the three lamp terminals equals 0.0 A. Port interlock lights remain green.
Sound of residual shutter click arrives 2.3 seconds before the corresponding gate disturbance is detected. Lead increases by 0.11 s for every additional 1.0 m of distance from the entry door.
Humidity at mid-gallery remains 34 % while residual emulsion dust forms on the port sills after 5 minutes of observation. Dust disperses without measurable change in local humidity.
Local magnetic field strength measures 0.3 gauss at floor level and 1.8 gauss at 1.5 m height. Field direction reverses after 7 minutes without change in gallery state.
Frame count on the open take-up reel decreases by 86 over 9 minutes while measured drive current at the projector terminals remains 0.0 A.
Surface of residual emulsion dust on the port sills exhibits electrostatic cling of 3.4 cm against vertical surfaces. Cling collapses after 37 seconds without measurable change in surface charge.
Cable lane migrates 11 mm toward the outbound wall over 6 minutes. Lane returns to original alignment without measurable change in floor temperature.
Port glass thickness measures 6.2 mm on first inventory and 9.8 mm on second inventory of the same pane. Pane returns to 6.2 mm on third inventory without change in wall position.
Film can diameter measures 380 mm on first inventory and 331 mm on second inventory of the same can. Can returns to 380 mm on third inventory without change in bench alignment.
Recorded motor interval equals 41.7 ms on the first 40 cycles and 28.4 ms on the subsequent 40 cycles. Interval returns to 41.7 ms without change in fixture state.
Lamp housing temperature measures 27.6 °C. Residual heat print on the same housing measures 64.2 °C after 6 minutes without measurable change in ambient temperature.
Booth clock reads 09:11. Second hand occupies the 44-second mark for 19 seconds. Clock returns to continuous advance without change in fixture state.
Entity Notes
None observed.
Exit / Continuity Status
Exit achieved through the same steel door after 31 minutes of observation. Exterior aperture on exit measures 0.68 m × 2.31 m. Residual emulsion dust on gloves dissipates within 9 minutes of exit. Local magnetic field returns to baseline 0.3 gauss within 12 minutes. No further residual effects recorded.