File:Nasa2.jpg

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Image title	a, Planar periodic Miura-ori. b, Standard (top) and modified (bottom) Miura-ori unit cells showing the mountain–valley folds. c, Mountain/valley fold orientations and the pattern of fixed/free nodes for the numerical optimization method. Grey shaded area represents one unit cell. d, Constraints at nodes and facets. Facet (quad) planarity implies that the volume of the tetrahedron defined by each quad willvanish. Developability requires that ∑i4αi = 2π and local flat-foldability requires α1 + α3 = α2 + α4 = π (Kawasaki’s theorem).
Orientation	Normal
Horizontal resolution	72 dpi
Vertical resolution	72 dpi
Y and C positioning	Centered
Exif version	2.1
Meaning of each component	Y Cb Cr does not exist
Supported Flashpix version	0,100
Color space	Uncalibrated
Image width	946 px
Image height	736 px
Width	946 px
Height	736 px
Pixel composition	RGB
Number of components	3
Bits per component	8 8 8
Headline	Origami/ Pop-Up Möbel/ Mosaik/ Krümmung/ "Anleitung"
Date metadata was last modified	11:45, 28 January 2016
IIM version	2