The tl;dr: hit the water at a 20% angle. But the answer isn't as interesting as the question…
Bocquet’s quest to understand how this happens — how a solid object can skim along water without immediately sinking — began more than a decade ago, while he was skipping stones on the Tarn River in southern France with his young son. ‘‘He turns to me,’’ Bocquet says, ‘‘and asks, ‘Why does the stone bounce on the water?’ ’’ To answer that question satisfactorily, Bocquet and his colleagues built a mechanical stone skipper and analyzed the angle of each toss using high-speed video. They also created a set of mathematical equations to predict the number of skips.
In most approaches to convert light into electricity, shadows are a bummer. Now though, researchers from the National University of Singapore (NUS) devised a shadow-effect energy generator (SEG) that scavenges electricity from the contrast between light and shadow. “When the whole SEG cell is under illumination or in shadow, the amount of electricity generated is […]
If you’re as ancient as I am, you might remember that awesome line of Revell “Visible” model kits: The Visible Man, Visible Woman, Visible V-8, Visible Mustang, etc. These see-thru models were a fun way to teach kids what lies beneath the surfaces of biological and mechanical worlds. I loved these kits! Now, thanks to […]
Apparently a high percentage of chefs at Chinese restaurants suffer shoulder plane from wok tossing. They must rapidly move the heavy pan to launch the food into the air so it cooks but doesn’t burn, even though the temperatures may hit 1200°C. Recently, Georgia Tech mechanical engineers studied the kinematics of Chinese restaurant chefs to […]
There was already enough concern about the healthy state of our drinking water before COVID-19. And while there’s no evidence that the coronavirus has ever been detected in the water supply, the general sense of fear surrounding any type of contamination is obviously at a fever pitch everywhere. Contaminants like lead, chromium, arsenic, copper, mercury, […]
Allergies are brutal, affecting about 30 percent of all American adults. While many only saddle sufferers with mild irritations like coughing, sneezing, a runny nose or watering eyes, some symptoms can be even more intrusive and significantly more painful. Sinus pressure is one of those unholy side effects, causing a pain that can stretch from […]
“I probably use my chef’s knives more than any other tool in the kitchen.” – Bobby Flay, celebrity chef Cooking at home has taken on a whole new life in the wake of COVID-19, and even with restaurants slowly reopening across the US, there’s heavy reason to suspect that more of us preparing more meals […]