Mystery Lab / Photographs & images
A straight blade looks bent: compare the times assigned to its rows
Keep a rigid two-blade bar’s motion fixed. Compare shared and staggered row times, then reverse only the sampling order.
Why use a straight bar to explore propeller photographs?
A spinning propeller can appear bent or disconnected in a photograph. Rolling shutters can record different horizontal rows at different times, producing an outline unlike a single instantaneous pose.
Use an original rotating two-blade bar instead of a photograph. Compare the reference pose on the left with the record on the right, and check the top, middle and bottom row times below. Button choices produce still explanatory views; nothing plays automatically.
① Compare shared row times with top-to-bottom row times. ② Keep clockwise rotation fixed and compare top-to-bottom with bottom-to-top sampling. Check the outline and timing table together.
Continue with the story and its records
Explore how the difference you noticed connects with the surviving records of the historical story.
Read about propeller pictures and row capture timesOpen the source
Sources and scope
Manufacturer documentation and direct explanations support the background: Basler for row exposure timing, Axis for spinning objects and the distinction from blur, and FUJIFILM for photographic context.
- 01Electronic Shutter Types Basler · Product Documentation · Checked 2026-10-22
- 02Global shutter vs rolling shutter Axis Communications · White paper · August 2026 · Checked 2026-10-22
- 03Electronic vs Mechanical Shutter FUJIFILM · X Stories · Checked 2026-10-22
The prose, bar geometry, row samples and timing table are original. No propeller photograph, drone shape, manufacturer diagram, logo or source layout is copied or traced. Row counts and numbers are model settings, not measurements from a camera.