That moment you realize Kevin’s a girl.
As one of the few pioneering female chemists in the 1960s, Stephanie Kwolek invented the flexible, tougher than steel fibers that were used to create life-saving body armor for law enforcement and soldiers.
Kwolek died this week at the age of 90, her co-workers at DuPont, the chemical company where Kwolek worked, confirmed to ABC News.
"She leaves a wonderful legacy of thousands of lives saved and countless injuries prevented by products made possible by her discovery," DuPont CEO Ellen Kullman said in a statement.
In 1965, Kwolek devised a liquid crystal solution that could be cold-spun. Nearly half a century later, her discovery and legacy have endured through a variety of goods ranging from bulletproof vests to sports rackets and smartphones.
Earlier this week, the one millionth vest using the latest Kevlar technology was sold, according to DuPont, showing just how important Kwolek’s discovery remains, even half a century after she did what researchers had long struggled to do.
Using our keyboards saves us lots of precious time, but writing by hand has lots of benefits.
Researchers have shown that children who know how to write by hand learn to read faster. They are also better at retaining information and coming up with new ideas.
“When we write, a unique neural circuit is automatically activated. There is a core recognition of the gesture in the written word, a sort of recognition by mental simulation in your brain,” Stanislas Dehaene, a psychologist at the Collège de France in Paris, told The New York Times.http://pda.sciencealert.com.au/news/20141906-25707.html
I notice a huge difference when I study via computer vs by hand. Took me a while to figure out what helps me study best, but it’s definitely by making posters and writing by hand.