Archive for the 'Audio & Video' Category

The “first-night effect”…

It’s no wonder we never got any rest at those sleepovers when we were kids…

 

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Half Your Brain Stands Guard When Sleeping In A New Place

Heard on All Things Considered

 

When you sleep in unfamiliar surroundings, only half your brain is getting a good night’s rest.

 

“The left side seems to be more awake than the right side,” says Yuka Sasaki, an associate professor of cognitive, linguistic and psychological sciences at Brown University.

 

The finding, reported Thursday in the journal Current Biology, helps explain why people tend to feel tired after sleeping in a new place. And it suggests people have something in common with birds and sea mammals, which frequently put half their brain to sleep while the other half remains on guard.

 

Sleep researchers discovered the “first-night effect” decades ago, when they began studying people in sleep labs. The first night in a lab, a person’s sleep is usually so bad that researchers simply toss out any data they collect…”

 

Read the rest here.

 

Listen below:

 

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The beginning of Bollywood…

Beautiful old film footage…Enjoy!

 

From The Public Domain Review,

Raja Harishchandra (1913)

 

“Directed and produced by Dadasaheb Phalke, the “father of Indian Cinema”, this 40-minute-long silent film is the very first full-length Indian feature — the beginning of Bollywood. The narrative of the film is based on the eponymous legend recounted in the Sanskrit epics Ramayana and Mahabharata. The story centres around the hero Harishchandra, a noble king, who, to honour his promise to the sage Vishwamitra, sacrifices his kingdom, his wife, and eventually also his children. By the end, however, having pleased the Gods with his actions, Harishchandra’s former glory is restored…

 

Unfortunately, Raja Harishchandra only exists now in fragments (1475 feet of it), which you can see above, with both Hindi and English intertitles…”

 

For more on this, click here.

 

 

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Solving Dark Matter & Dark Energy

The Long Now Foundation offers a series of seminars on long term thinking. The speakers are always incredibly interesting. Their most recent speaker was Priyamvada Natarajan. She is a professor in the Departments of Astronomy and Physics at Yale University and at the Dark Cosmology Center, Niels Bohr Institute, University of Copenhagen, Denmark. She is an active proponent for the public understanding and study of science.

 

“These days,” says Priyamvada Natarajan, “data is coming in from the universe faster than theory can keep up with it. We are in a golden age of cosmology.”

 

 

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Click here to go straight to her seminar.

 

The darkness of dark matter and dark energy
ALL THAT WE KNOW of the universe we get from observing photons, Natarajan pointed out. But dark matter, which makes up 90 percent of the total mass in the universe, is called dark because it neither emits nor reflects photons?—?and because of our ignorance of what it is. It is conjectured to be made up of still-unidentified exotic collisionless particles which might weigh about six times more than an electron.

 

Though some challenge whether dark matter even exists, Natarajan is persuaded that it does because of her research on “the heaviest objects in the universe“?—?galaxy clusters of more than 1,000 galaxies. First of all, the rotation of stars within galaxies does not look Keplerian?—?the outermost stars move far too quickly, as discovered in the 1970s. Their rapid rate of motion only makes sense if there is a vast “halo” of dark matter enclosing each galaxy….”

 

For the rest of the description and the entire recorded seminar, click here to go to the Long Now Foundation website.

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