the backyard scientist
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The Shockwaves On A Rain-Soaked Window Screen Are Wonderfully Unique
Throw a pebble into a still pond, and the shockwaves from the disturbance will ripple out in all directions in nearly perfect concentric circles. But disturb the fine mesh of a window screen that’s soaked with rain or morning dew, and the shockwave will ripple out with a unique, four-pointed star pattern.
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We Do Not Recommend Making A Sword With Thermite, But Hey
Thermite, a mixture of powdered iron oxides and aluminium, can be burned to produce temperatures it would be hard to argue are truly safe outside of a meticulously controlled environment (over 4,000 degrees Fahrenheit / 2,200 degrees Celsius). It’s used for a variety of purposes, from metal cutting and welding to military incendiaries.
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What Happens When You Dive Into A Pool Filled With 25 Million Squishy Waterballs?
Video: Would you sink or float if you were tossed into a gigantic vat of squishy gelatinous spheres? Mark Rober, one of the Backyard Scientists, decided the only way to definitively answer the question that few have ever asked was to fill an entire pool with 25 million of the tiny spheres, and dive in.