Front / Recto
- Title N²ATUR + T²ECHNIK + K²UNST = √-1 = i
- Negative Date 1924
- Print Date 1924
- Medium Gelatin silver print with black ink
- Dimensions Image 6 1/4 × 4 7/16" (15.8 × 11.2 cm)
- Place Taken Moscow
- Credit Line Thomas Walther Collection. Gift of Shirley C. Burden, by exchange
- MoMA Accession Number 1762.2001
- Copyright © 2015 Artists Rights Society (ARS), New York / VG Bild-Kunst, Bonn
Back / Verso
- Mount Type No mount
- Marks and Inscriptions Inscribed in black ink on sheet recto, bottom right: N²ATUR + T²ECHNIK + K²UNST = √-1 = i. Signed in black ink on sheet recto, bottom right: El.
The artist, Moscow/Hannover; to Kate Steinitz (1889–1975), Hannover/Los Angeles ; to L.A. Louver Gallery (Peter and Elizabeth Goulds), Los Angeles ; to Galerie Folker Skulima, Berlin ; purchased by Thomas Walther, May 22, 1986 ; purchased by The Museum of Modern Art, New York, 2001.
 MacGill/Walther 2001(3), p. 13.
 Galerie Folker Skulima invoice, May 22, 1986.
- Format Metric
- UV Fluorescence Recto negative Verso negative
- Fiber Analysis No fiber data available
- Material Techniques Printing-out paper
This work was determined to be a gelatin silver print via X-ray fluorescence (XRF) spectrometry.
The following elements have been positively identified in the work, through XRF readings taken from its recto and verso (or from the mount, where the verso was not accessible):
- Recto: S, Ca, Zn, Sr, Ag, Ba, Au, Pb
- Verso or mount: not available
The graphs below show XRF spectra for three areas on the print: two of the recto—from areas of maximum and minimum image density (Dmax and Dmin)—and one of the verso or mount. The background spectrum represents the contribution of the XRF instrument itself. The first graph shows elements identified through the presence of their characteristic peaks in the lower energy range (0 to 8 keV). The second graph shows elements identified through the presence of their characteristic peaks in the higher energy range (8 to 40 keV).