“Stop to explore a microscopic universe rendered in vivid acrylics. This painting draws you into a dynamic world of colliding forms and vibrant colors, inviting contemplation of hidden structures and unseen life.”
A vibrant, almost chaotic scene unfolds in "Back Teria One Oh! One," where abstract forms collide and merge with a striking intensity. The canvas pulses with a dynamic energy, dominated by a central, organic shape that seems to both expand and contract, hinting at microscopic life or perhaps a swirling nebula. Bright, almost neon hues of green, yellow, and orange are layered over deeper blues and purples, creating a sense of depth and movement. This interplay of color and form suggests a world beyond immediate perception, inviting us to consider the unseen forces and structures that shape our reality. The texture of the acrylic paint is evident, contributing to the work's raw, immediate feel.
- Artist
- Karl Heffner
- Medium
- Acrylic on canvas
- Location
- Art Institute of Chicago
- Dimensions
- 87.6 × 59.7 cm (34 1/2 × 23 1/2 in.)
- Collection
- Contemporary Art
- Culture
- United States
- Credit line
- Twentieth-Century Discretionary Fund
What to Notice
Four details hide in plain sight. Here’s where to look.

The way the bright green streaks seem to glow from within the darker forms.
Look for the subtle, almost hidden, circular patterns embedded in the larger shapes.
Notice the feathery, translucent edges where colors overlap and blend.
Observe how the darker background colors push the central elements forward.
Stand in front of it and listen
The full narration walks you through Back Teria One Oh! One — the story behind it, the details most visitors miss, and why it matters. Free in the Art Whisper app.
Karl Heffner
1849–1925 · GermanyKarl Heffner was a German landscape painter known for atmospheric, softly lit river and twilight scenes in the tradition of Corot and the Barbizon school.
Further Works by Heffner
Two Girls in a Garden
1914 · Art Institute of Chicago
Macy's Jet Set
Art Institute of Chicago
Screamin' Jay Hawkins
Art Institute of Chicago
You Scratch My Back and I'll Scratch Yours
Art Institute of Chicago
The Embrace
1918 · Art Institute of Chicago
Portrait of a Woman
1868 · Art Institute of Chicago
Carnival Figures
1919 · Art Institute of Chicago
Memorial Sheet for Karl Liebknecht
1920 · Art Institute of Chicago
