FE Meme
Mount Fuji From a Plane: Where's the Curve?
#38: From cruising altitude over Tokyo, Mount Fuji and a vast cityscape remain visible with a flat-looking horizon, so curvature must be absent.
The Meme
High-altitude aerial: dense urban grid fading into haze, dark curved river/bay foreground, snow-capped Fuji centered on a straight-looking horizon under clear blue sky. No overlaid text.
Why It Spreads
A phone window shot with Mount Fuji centred on a straight-looking horizon over a hazy Tokyo sprawl feels like seeing "too far" for a ball. No overlaid text makes it feel like raw evidence: if a famous peak and vast cityscape stay visible from cruising altitude, curvature must be absent.
What It Gets Wrong
The high-altitude aerial over Tokyo shows snow-capped Fuji centred on a straight-looking horizon, but visibility depends on target elevation and atmospheric clarity, not absence of curvature in a wide phone frame. Fuji rises to 3776 m above a metro area near sea level, so its summit can appear above the geometric horizon even when lower districts hide, and at airliner height ~10 km d_h ≈ √(2Rh) with R ≈ 6371 km gives a horizon near ~357 km with dip near ~3° that wide shots flatten. Treating haze-compressed depth as proof of a flat plane is inconsistent with a hidden-height calculation that counts Fuji's elevation. TestTheGlobe's No Curvature Is Visible and TestTheGlobe's Horizon Distance Calculator walk through the observations and predictions this image skips.
The Debunk
An elevated target like Fuji at 3776 m plus shallow horizon dip at ~10 km altitude predicts the sightline in the photo; d_h ≈ √(2Rh) gives a horizon near ~357 km. A flat-looking phone frame is inconsistent with a proper hidden-height calculation. Use TestTheGlobe's Horizon Distance Calculator to compare the meme's claim with a measurable prediction.
- TestTheGlobe's No Curvature Is Visible: Mount Fuji's 3776 m elevation places its summit above much of the hidden lower terrain on a spherical model with R ≈ 6371 km.
- TestTheGlobe's Horizon Distance Calculator: at ~10 km altitude, d_h ≈ √(2Rh) gives a horizon near ~357 km and horizon dip near ~3°, which phone-wide shots make look level.
- TestTheGlobe's Horizon Distance Calculator shows how far the geometric horizon sits at cruising altitude, the baseline for judging what should be visible.
- TestTheGlobe's Shoreline Hidden Height experiment models how elevated targets remain visible above the geometric horizon, matching the Fuji sightline.