level · spatial
a flat surface that is just between its boundaries
Examples
- The surface of Lake Mead remained at 1081 feet elevation for 72 days in 2000, bounded by the Hoover Dam's spillway gates. geography
- The International Space Station's solar array platform maintains a 45-degree tilt angle relative to Earth's terminator during sun-tracking mode. engineering
- The floor of the Salar de Uyuni reflects the sky so uniformly because its salt crust forms a level surface over 10,000 square kilometers. geology
Emergence
through: When a flat surface is bounded and coincides exactly with the space it occupies, the surface and boundaries together form a level.
- exact fit between surface and space
- bounded flatness
- spatial coincidence
Chain to foundations
as tree
- levelL16
- flatL15
- spaceL0
- patternL0
- boundaryL2
- partL1
- surfaceL4
- acrossL14
- spaceL0 (shown above)
- directionL13
- lineL12
- setsL3
- patternL0 (shown above)
- othersL2
- spaceL0 (shown above)
- timeL0 (shown above)
- patternL0 (shown above)
- differenceL1 (shown above)
- boundaryL2 (shown above)
- differenceL1 (shown above)
- patternL0 (shown above)
- spaceL0 (shown above)
- arrangementL3
- pointsL2
- regularL1
- setsL3
- pointsL2 (shown above)
- goL3
- point of no returnL11
- windowL7
- wallL10
- parameterL4 (shown above)
- persistL1 (shown above)
- partL1 (shown above)
- lineL12
- sideL3
- relevanceL12
- parameterL4 (shown above)
- driftL11
- parameterL4 (shown above)
- changeL1 (shown above)
- goL3 (shown above)
- makeL4
- nothingL10
- noneL9
- differenceL1 (shown above)
- amountL8
- sizeL2
- quantityL7
- numberL6
- differenceL1 (shown above)
- distinctL3
- differenceL1 (shown above)
- othersL2 (shown above)
- othersL2 (shown above)
- spaceL0 (shown above)
- marksL5
- differenceL1 (shown above)
- partL1 (shown above)
- changeL1 (shown above)
- patternL0 (shown above)
- surfaceL4 (shown above)
- sizeL2 (shown above)
- numberL6
- numberL6 (shown above)
- offL2
- spaceL0 (shown above)
- differenceL1 (shown above)
- noneL9
- wayL9
- spaceL0 (shown above)
- linksL8
- partL1 (shown above)
- connectsL7
- flowL3
- interactionL2 (shown above)
- persistL1 (shown above)
- structureL2 (shown above)
- broughtL6
- happenL2
- wallL10 (shown above)
- motionL2 (shown above)
- evenL7
- boundaryL2 (shown above)
- spaceL0 (shown above)
- justL2
- differenceL1 (shown above)
- patternL0 (shown above)
- surfaceL4 (shown above)
- flatL15
Neighborhood
Concepts that depend on this one above; what it is built from below.
Used by (4)
Relations
| is-a | surface.exterior | is-a |
| abstracts | flat.commonsurfacegeometry | abstracts |