In this paper, a novel Eulerian nonlinear beam-wave interaction (BWI) theory considering harmonic interaction of a helix traveling-wave tube (TWT) is developed. Derived from this Eulerian model, the ...

A wet sheet can help your body cool down at night. The best solution during a heat wave is to avoid being outside during the hottest parts of the day and staying inside as much as possible. If you do ...

Long- and short-term solutions to keep yourself and your home cool in a heat wave By Julia Simon Published June 24, 2025 at 4:42 PM EDT Listen • 3:54 ...

The best solution during a heat wave is to avoid being outside during the hottest parts of the day and staying inside as much as possible. If you do have to be outside, drink water — and then ...

A wet sheet can help your body cool down at night. The best solution during a heat wave is to avoid being outside during the hottest parts of the day and staying inside as much as possible. If you do ...

Now is not the time to be baking or turning on the oven. A wet sheet can help your body cool down at night. The best solution during a heat wave is to avoid being outside during the hottest parts of ...

The East Coast and much of the Midwest are experiencing the first major heat wave of the year. Millions of people in the U.S. are trying to stay cool as the summer's first major heat wave continues to ...