In high school, I once tried to build a smoke-ring-generating vortex cannon out of a five-gallon paint bucket, a t-shirt, and some dry ice. My contraption was a letdown. It produced weak, wispy ...

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But only some volcanoes seem able to make smoke rings, and only at certain times. Back when Pulvirenti first learned about them in 2013, he found that the scientific literature offered no ...

Dr. Scollo’s team scoured the internet and research footage for vapor rings caught on camera. The rings they found were 30 to 650 feet in diameter and lasted up to 10 minutes.

One morning last week a stately B-36 flew on a steady course more than 40,000 feet above the Nevada wastelands. Miles ahead and 10,000 feet below, Sabre jets flashed back and forth across its path, ...

The two stars in Wolf-Rayet 140, shown here, produce shells of dust every eight years that look like ... More rings, as seen in this image from NASA’s James Webb Space Telescope. Each ring was ...

Try for tones “like smoke rings,” suggested another. Finally Baldwin produced a satisfactory prototype, placed it alongside two standard models identical in appearance, ...

Humpback whales may be trying to communicate with us, using bubbles. For the first time, scientists from the SETI Institute and UC Davis have documented humpback whales blowing large “vortex bubble ...

Ring. Ring made a big — though rather surprising — announcement at CES 2025, revealing that it has partnered with Kidde to launch a new collection of smart smoke alarms.Arriving in April, the ...

Ring is launching a new optional 24/7 smoke and carbon monoxide monitoring service for $5 a month with the new Kidde smoke and combination alarm integration.