# @optica.worldwide on Instagram

- **Type:** Image
- **Original URL:** https://www.instagram.com/p/DPRw9q4k8KN
- **Gondola URL:** https://gondola.cc/posts/35185860-opticaworldwide-instagram
- **Thumbnail:** https://img.gondola.cc/tr:w-,h-,fo-auto/postThumbnails/33d1d2ee78.jpg
- **Posted:** 2025-10-01T19:00:36.000+00:00
- **Account Owner:** Optica (@optica.worldwide) — https://gondola.cc/optica.worldwide

## Caption

Images of the blue sky above a university building, reflected in coffee bubbles, are magically colored by destructive thin-film interference of the spectral parts of the daylight (complementary colors).

—Aliaksei Kobylinskiy, University of Applied Sciences Jena, Jena, Germany

#InternationalCoffeeDay #Photography

## Stats

- **Views:** 0
- **Likes:** 90
- **Shares:** 0
- **Comments:** 0

## Tags

photography, internationalcoffeeday

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