-Bertrand Russell ”The Study of Mathematics” (1902)
|—||Michio Kaku, String Theory Genius Explains The Coming Breakthroughs That Will Change Life As We Know It|
So, you never went to university…or you assiduously avoided all maths whilst at university…or you started but were frightened away by the epsilons and deltas…. But you know the calculus is one of the pinnacles of human thought, and it would be nice to know just a bit of what they’re…
60,000 miles up: Space elevator could be built by 2035
magine a ribbon roughly one hundred million times as long as it is wide. If it were a meter long, it would be 10 nanometers wide, or just a few times thicker than a DNA double helix. Scaled up to the length of a football field, it would still be less than a micrometer across — smaller than a red blood cell. Would you trust your life to that thread? What about a tether 100,000 kilometers long, one stretching from the surface of the Earth to well past geostationary orbit (GEO, 22,236 miles up), but which was still somehow narrower than your own wingspan?
The idea of climbing such a ribbon with just your body weight sounds precarious enough, but the ribbon predicted by a new report from the International Academy of Astronautics (IAA) will be able to carry up to seven 20-ton payloads at once. It will serve as a tether stretching far beyond geostationary (aka geosynchronous) orbit and held taught by an anchor of roughly two million kilograms. Sending payloads up this backbone could fundamentally change the human relationship with space — every climber sent up the tether could match the space shuttle in capacity, allowing up to a “launch” every couple of days.
The report spends 350 pages laying out a detailed case for this device, called a space elevator. The central argument — that we should build a space elevator as soon as possible — is supported by a detailed accounting of the challenges associated with doing so. The possible pay-off is as simple as could be — a space elevator could bring the cost-per-kilogram of launch to geostationary orbit from $20,000 to as little as $500.
‘Iron Man’ by Black Sabbath is my new jam.
"This is what the next generation of engineers looks like
Black Girls CODE introduces young girls of color to computer programming, mobile app development, robotics and other STEM fields, so the girls can learn how to build the tools they want to see in the world. The non-profit is a global organization, with chapters in Oakland, Calif., Atlanta, New York and even South Africa, with expansion to eight more cities planned for next year. Every chapter targets girls of color between the ages of 7 and 17, formative years for capturing the girls’ interest in STEM and building their self-confidence.
"Science is magic, and our girls are opening their eyes to the fact that they can learn to become the magicians," says Bryant, who launched the company with a class of 12 girls.
But the reach of Black Girls CODE has grown exponentially in two years; the roster now exceeds 2,000 girls. Bryant was named one of the White House’s Champions for Change in the tech sector, and Black Girls Code was named one the “2012 Most Innovative Nonprofit.”
Scientists describe as ‘extremely interesting’ new analysis that makes case for gamma rays tracing back to Wimp particles
The HP-11C scientific calculator, introduced in 1981 and discontinued in 1989, featured a “slim line” design, function set and programming tools, and continuous memory.