How do we know we live in three dimensions? In this One Minute Physics episode, animator Henry Reich explores the concept of multiple dimensions and shows one way to test that we live in a 3D world.
The video is part of a series of animations that explains a physics concept in just 1 minute. You can watch the last episode on the sound of hydrogen here.
Wednesday, September 7, 2011
Do we live in a 3-dimensional world?
From New Scientist:
Wednesday, February 9, 2011
Russell on Mubarak
From the Grave
"Exactly 41 years ago to the day the great British philosopher Bertrand Russell died. Among the countless works that will continue to bring him posthumous recognition, are his various treatises on human psychology and the one thing he considered the principle driving force in social life - power.
"As Hosni Mubarak addressed the millions of Egyptian people, marching, protesting, bursting with revolutionary fervour intent on seeing him vacate a Presidential seat he's occupied for 30 years, I pondered over what Russell would think of Mubarak, and his address, wherein he promised to step down - eventually.
"Below are extracts from Russell's articles on political power and the book, "The Conquest of Happiness", offset with extracts of Mubarak's latest speech..."
Read the rest on Al Jazeera Blogs.
"Exactly 41 years ago to the day the great British philosopher Bertrand Russell died. Among the countless works that will continue to bring him posthumous recognition, are his various treatises on human psychology and the one thing he considered the principle driving force in social life - power.
"As Hosni Mubarak addressed the millions of Egyptian people, marching, protesting, bursting with revolutionary fervour intent on seeing him vacate a Presidential seat he's occupied for 30 years, I pondered over what Russell would think of Mubarak, and his address, wherein he promised to step down - eventually.
"Below are extracts from Russell's articles on political power and the book, "The Conquest of Happiness", offset with extracts of Mubarak's latest speech..."
Read the rest on Al Jazeera Blogs.
Thursday, January 20, 2011
Sign of the Times?
by Jerome
Following the trend of news stories announcing philosophy majors disappearing or whole departments closing down, the headline on the Huffington Post this morning says that "Many College Students Failing to Learn Critical Thinking Skills." Yet the article blames students' social habits and lower expectations on the part of educators, making no mention of the absence of logic or critical thinking courses (considered an essential pre-requisite to eduction by medieval thinkers).
Is the problem the fault of individuals or institutions? Or is part of a larger problem, like the commodification of education, or a necessary side effect of the shift of our epistemic medium from a written culture to one that is visual and transitory?
What do you think?
Following the trend of news stories announcing philosophy majors disappearing or whole departments closing down, the headline on the Huffington Post this morning says that "Many College Students Failing to Learn Critical Thinking Skills." Yet the article blames students' social habits and lower expectations on the part of educators, making no mention of the absence of logic or critical thinking courses (considered an essential pre-requisite to eduction by medieval thinkers).
Is the problem the fault of individuals or institutions? Or is part of a larger problem, like the commodification of education, or a necessary side effect of the shift of our epistemic medium from a written culture to one that is visual and transitory?
What do you think?
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