
The SciencesSeptember 1, 1941
Plain Water's Unplainness
Recent Research Reveals Some Odd New Facts About Common, Ordinary Simple Water

Plain Water's Unplainness
Recent Research Reveals Some Odd New Facts About Common, Ordinary Simple Water

Fighting Friction
Just How Friction Operates Between Metals Is Not So Simple as it Sometimes Seems

Soundless Sound Waves
Supersonic Waves in Science and Industry, For Smoke Precipitation, Emulsification of Liquids, in Fishing and in War, Sounds that Burn

Soundless Sound Waves
The Odd Realm of Supersonics-Inaudible, Versatile Vibrations-is Receiving Increasing Attention From Scientists