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A spiraling tunnel of gradients green with rings and radial design. Texture with curved lines for art, design, website, business cards, technology, presentation, brochure. Tunnel, ripple, water effect
Abstract close-up of a golden surface with concentric rings. A metallic sheen, elegant and modern, perfect as a background for creative design and visual projects.
Human brain on magnifying glass with puzzle pieces symbolizing mental health, cognitive analysis, psychology, problem solving, and intelligence.
Circle sound wave visualization. Wifi range. Signal concentric circle. Round light effect. Radio station signal. Water ripple with circle waves. Abstract music background.

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