During its daily two-minute sequence, which includes a trumpet fanfare, mist, and flashing lights, the machine displays one of three metal symbols as a prediction of the weather for the following 24-hour period: a sun for clear and sunny weather, a blue heron for drizzle and transitional weather, or a dragon and mist for rainy or stormy weather.
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She is known for her nickname, "Janice Dean, the Weather Machine", coined by evening Fox News Channel anchor Shepard Smith.
The news of the death of Georg Wilhelm Richmann, a professor in St. Petersburg, who was killed by lightning in 1753 during his attempt at measuring the intensity of the electric field in the atmosphere, caused Diviš to become interested in atmospheric electricity, and to the decision to construct a "weather-machine" at Přímětice.