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Frozen Bubbles at Mount Washington Observatory

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Mount Washington Observatory’s summit crew used a cold January day to watch soap bubbles freeze. The film makes the changing surface visible, turning a familiar plaything into a small weather observation.

Soap bubble with visible ice patterns against a dark background
Soap bubble with visible ice patterns against a dark background Credit: Mount Washington Observatory / Frozen Bubbles, January 24, 2011.

Sheltered locations produced different results

The crew’s account describes trying more than one spot around the Sherman Adams building. That detail matters: even on the same summit, shelter and local temperature can alter how quickly a thin film changes.

Keep the experiment’s date and scale

The recording is from January 24, 2011, not a report of today’s summit conditions. Its useful contribution is the comparison between locations and visible crystal growth. A precise-looking recipe cannot guarantee the same result under another combination of weather, mixture and filming conditions.

Explore more: Angela Kelly’s close-up bubble photographs; another cold-weather bubble video.

Video: Frozen Bubbles 01-24-11 (published by Mount Washington Observatory).

The summit crew compared sheltered spots

The original account describes testing the bubble mixture around the Sherman Adams building rather than simply exposing it to the strongest summit wind. In one location, crystal growth was visible for longer; in another, freezing appeared much faster. That contrast makes the film an observation of local conditions as well as an entertaining cold-weather demonstration.

Trial and error belongs in the explanation

The crew reported experimenting with soap, sugar and water before obtaining the filmed result. Mixture and conditions were therefore both part of the setup. The exact household quantities are not a guarantee of reproducing it elsewhere. The useful lesson is to recognise the variables and the particular January 2011 setting, with the observatory’s own video preserving what the crew saw.

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