THRESHOLD COMPLEX EXPLORATION LOG
Designation / Log ID: 54-Y51
Apparent Date/Time: 29 September 2026 / 08:41 (local) — secondary stamp reads 22:17 04 March 1974
Entry Method: Single steel-frame door marked “P-53 PHOTOCOPY – AUTHORIZED STAFF”. Exterior clear aperture measures 0.91 m × 2.06 m. Interior aperture measures 1.04 m × 1.88 m on entry and 0.79 m × 2.19 m on exit.
Environmental Baseline
Lighting: fluorescent tube fixtures, color temperature measured at 4120 K. Intensity constant at 61 lux.
Ambient temperature: 19.7 °C. Humidity: 58 %.
Background sound: continuous copier cycle at 0.9 Hz. Baseline reading 21 dB.
Air movement: none detected. Barometric pressure 1012.1 hPa on entry; 1004.6 hPa after 2.8 m of travel.
Spatial Observations
Gallery estimated 24 m long by 6.8 m wide by 2.7 m high. Laser measurement returns 17.1 m long by 5.9 m wide by 3.2 m high.
Floor: vinyl composition tile with painted service aisle. Line width measures 76 mm. Surface remains uniform under repeated contact.
Walls: painted gypsum with four copier stations and one supply cabinet. Paint thickness measures 0.3 mm. Surface remains uniform under repeated contact.
Ceiling: acoustic tile with eight fluorescent fixtures. Fixture count remains eight after eleven visual inventories.
Repeating motif: every 1.6 m a numbered output bin occupies the rear wall. Bin lip height measures 980 mm. Tray finish is identical across all units.
Anomalies
Visual inventory of output trays returns 28. Physical inventory returns 28. Measured occupied-tray count equals 0 while calculated residual occupancy across the same rack equals 11.
Floor remains level under spirit level. Measured residual toner film on the lower cabinet panels slopes 1.8° toward the outbound wall. Slope reverses after 6 minutes of continuous observation without change in physical orientation.
Posted occupancy plaque reads 28 TRAYS / 0 JOBS. Measured combined drive current at the four stations equals 0.0 A. Seal integrity lights on the fire door remain green.
Sound of residual copier cycle arrives 2.1 seconds after the corresponding surface disturbance is detected. Delay increases by 0.17 s for every additional 1.0 m of distance from the entry door.
Humidity at mid-gallery remains 58 % while residual toner film forms on the aisle-line edges after 5 minutes of observation. Film disperses without measurable change in local humidity.
Local magnetic field strength measures 0.5 gauss at floor level and 2.3 gauss at 1.5 m height. Field direction reverses after 7 minutes without change in gallery state.
Sheet count on the open-feed rail decreases by 12 over 7 minutes while measured drive current at the stations remains 0.0 A.
Surface of residual toner on aisle-line edges exhibits electrostatic cling of 3.7 cm against vertical surfaces. Cling collapses after 38 seconds without measurable change in surface charge.
Aisle line migrates 11 mm toward the inbound wall over 5 minutes. Line returns to original alignment without measurable change in floor temperature.
Cabinet depth measures 640 mm on first inventory and 571 mm on second inventory of the same cabinet. Cabinet returns to 640 mm on third inventory without change in wall position.
Bin lip height measures 980 mm on first inventory and 912 mm on second inventory of the same bin. Bin returns to 980 mm on third inventory without change in floor tile alignment.
Recorded copier interval equals 1.11 s on the first 30 cycles and 0.84 s on the subsequent 30 cycles. Interval returns to 1.11 s without change in fixture state.
Glass platen temperature measures 19.7 °C. Residual heat print on the same platen measures 31.4 °C after 4 minutes without measurable change in ambient temperature.
Entity Notes
None observed.
Exit / Continuity Status
Exit achieved through the same steel-frame door after 36 minutes of observation. Exterior aperture on exit measures 0.79 m × 2.19 m. Residual toner film on boots dissipates within 12 minutes of exit. Local magnetic field returns to baseline 0.5 gauss within 14 minutes. No further residual effects recorded.