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Massimo Boscherini

The History of the Space Shuttle - Alan Taylor - In Focus - The Atlantic - 0 views

  • From its first launch 30 years ago to its final launch scheduled for next Friday, NASA's Space Shuttle program has seen moments of dizzying inspiration and of crushing disappointment.
  • When next week's launch is complete, the program will have sent up 135 missions, ferrying more than 350 humans and thousands of tons of material and equipment into low Earth orbit. Fourteen astronauts have lost their lives along the way -- the missions have always been risky, the engineering complex, the hazards extreme.
Massimo Boscherini

Kablam! | Bad Astronomy | Discover Magazine - 0 views

  • The three panels show a 1986 test of a Tomahawk cruise missile. The missile traveled 640 km (400 mile) low over the terrain to detonate above the target, a decommissioned fighter plane. It’s pretty clear the test was a success.
  • When the missile exploded, the expanding debris cloud from the vaporized weapon was probably moving faster than the speed of sound. Even so, in this second picture you can see none of it had touched the plane yet when the shot was snapped. Yet look at the plane: it’s on fire. How can that be? It’s because of something that moves much faster even than supersonic debris: light. When the warhead exploded, it sent out a huge pulse of heat in the form of infrared photons, light that travels about a million times faster than sound. As far as that flash of heat was concerned, the expanding debris was standing perfectly still! There was plenty of time for that heat to get to the plane and set it aflame before the explosion itself could reach that far.
Massimo Boscherini

Aerospaceweb.org | Ask Us - Fastest Skydiver Joseph Kittinger - 0 views

  • Fastest Skydiver Joseph Kittinger
  • I heard that a man jumped from a balloon at the edge of space and broke the sound barrier during his fall. Who was he and when did this happen?
  • 16 August 1960, Kittinger jumped from a balloon high in the stratosphere to make the longest skydive from the highest altitude in history
  • ...6 more annotations...
  • He did reach a peak velocity of 614 mph (988 km/h)
  • Excelsior III helium-filled balloon and reached a new record altitude of 102,800 ft (31,330 m)
  • sharp pain in his right hand due to a failure in the glove of his pressure suit
  • three times higher than a commercial airliner typically flies
  • Kittinger experienced air temperatures as low as -94°F (-70°C)
  • why so many sources mistakenly claim that Joseph Kittinger broke the sound barrier during his 1960 skydive
Massimo Boscherini

Khan Academy - 0 views

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    Learn for free about math, art, computer programming, economics, physics, chemistry, biology, medicine, finance, history, and more. Khan Academy is a nonprofit with the mission of providing a free, world-class education for anyone, anywhere.
International Teacher Certificate

Education for Global Competence: Preparing our Youth to Engage the World - 0 views

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    Veronica Boix Mansilla's and Anthony Jackson's book "Educating For Global Competencies: Preparing Our Youth to Engage the World" is an excellent resource for internationally-minded teachers. The Asia Society is doing some really interesting work in education for global competencies, which they define as "the capacity and disposition to understand and act on issues of global significance." This book articulates how teachers and schools can graduate globally competent students, as well as the skills and knowledge students need in the 21st century. From the book's introduction, "Globally competent individuals are aware, curious, and interested in learning about the world and how it works. They can use the big ideas, tools, methods, and languages that are central to any discipline (mathematics, literature, history, science, and the arts) to engage the pressing issues of our time. They deploy and develop this expertise as they investigate such issues, recognizing multiple perspectives, communicating their views effectively, and taking action to improve conditions." The chapter on teaching for global competencies is particularly valuable. It tries to answer the questions, "What does quality teaching for global competence look like?" and "How can teachers design instruction to foster global competence among their students?" The book can be downloaded for free via the Asia Society: http://asiasociety.org/files/book-globalcompetence.pdf
hannita

The erosion of geography - 0 views

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    In its white paper on education earlier this year, the government mentioned mathematics more than 50 times, history rated one mention and geography none at all. Currently geography is a part of the core curriculum until the age of 14 and then it becomes optional, but in the education bill, due to be published on Friday, the subject is expected to lose out again.
Massimo Boscherini

Letters of Note - 2 views

  • Letters of Note is an attempt to gather and sort fascinating letters, postcards, telegrams, faxes, and memos. Scans/photos where possible. Fakes will be sneered at. Updated as often as possible; usually each weekday.
Massimo Boscherini

One small step - NYPOST.com - 0 views

  • So, will we ever be sending humans to space again?
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