Object size indicated by the reflected image:
C_wc01.gif (24481 bytes) WC800.jpg (203803 bytes)

Wedding Cake - metal balls reflected images of "Carriage house"
>>[[Location of Meier's residence, 1980]]<<

1.[Carriage house image] on spherical diameter is about 28%. According imaging principle for spherical mirrors, the angle(θ) from front corners of the carriage house to the nearest metal ball is 66°.   {When object distance >> ball radius, imaging proportion:  sin(θ/4)=0.28 , then θ=66°}

Inside the carriage house is 7.6 meters wide, about 1.75 meters long is the eave extend outside the wall, together with the stairwell (on the left side of the house), the tailgate (house's right side) & trees around the house, so the width of Carriage house's image should at least be 11 m = Roof span. 

[(Shooting time11:30 10/22/1980), counting the shadows of the house & trees, the dark image will be more than 13m.]

[#800] (The lower right corner of the residence to a tangent of the low rock wall) + (the 2nd floor window to the eave corner at the middle of Roof), two white lines intersect - the camera location (in the carriage house, not against the "removable wall").  Drawing two tangent lines from the shot to the ship, get the range of the ship and the bisector. Drawing a 66° angle from both sides of the carriage house to the bisector, get the nearest metal ball distance 8.6 meters from the carriage house. At this location for Rings & Hull can be presented on the photo, the ship's diameter (plus its edge) should at least be 6.5 meters.

2.Compared with [#801], [#802]: the ship in these photos are located in the same place.  [Shot positions (a,b,c) shown in fig.1, Carriage house.]

3. Don't underestimate the twisted hull [exclude Photo damp]: The casing assembly (Ring - Hull without gaps), lower and upper ring asynchronous rotation... It is technically more difficult than Round shape object can do.

C_wc02.gif (12972 bytes) C_wc03.gif (53816 bytes)
C_wc04.gif (46198 bytes)
* Depth of Field is determined by three factors - aperture size, the focal length, and distance from the lens... It is the only way to determine the size by backward-reasoning on spherical mirror images.
Slander sitehttp://www.tjresearch.info/Wedcake.htm     -- [Custom lid - no screw thread]