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Posts Tagged ‘Education’

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I saw this the other day and I had to post it here.

punctuation

It reinforces for me why punctuation matters!

A very happy new year to everyone!

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Check out Facebook.com/grammarly and Grammarly.com!

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Pythagorean Theorum: The area of the square of the hypotenuse of a right-angled triangle is equal to the sum of the square on the other two sides.

Pythagorean.svg

The theorem can be written as an equation relating the lengths of the sides ab and c, often called the Pythagorean equation:

a^2 + b^2 = c^2\!\,

where c represents the length of the hypotenuse, and a and b represent the lengths of the other two sides.

And that’s the way it is usually explained.

This way is MUCH cooler!

It is a demonstration of the Pythagorean Theorem using water.

pythagorean-theorum

Who said Euclidean geometry can’t be fun!

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We’ve all spent sleepless nights, tossing and turning, as we pondered this profound question…

What happens I fall into a black hole?

Worry no further, boys and girls.

Neil deGrasse Tyson explains it all for you!

You’re welcome.

Sleep tight!

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Neil deGrasse Tyson is an American astrophysicist. He is currently the Frederick P. Rose Director of the Hayden Planetarium at the Rose Center for Earth and Space and a research associate in the department of astrophysics at the American Museum of Natural History. This talk is based on his well-reviewed book, Death by Black Hole: And Other Cosmic Quandaries.

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I’ve not yet had the opportunity to see Ken Burns’ masterful work, The Civil War.

But I did see this one clip. [1]

A week before the Battle of Bull Run, Sullivan Ballou, a Major in the 2nd Rhode Island Volunteers, wrote home to his wife, Sarah, in Smithfield. The letter was written from Washington, D.C. July 14, 1861, on the eve of his unit moving out to war.

He wrote the letter in anticipation of his death.

It is, to me, the most moving love letter I’ve ever read. By the end, I was reduced to tears.

(Bull Run, Virginia – View of the battlefield)

Sullivan Ballou was killed a week later at the First Battle of Bull Run.

In this 150th anniversary of those horrible, bloody years of the American Civil War, please take a few minutes and listen to Sullivan Ballou’s heart-felt sentiments.

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[1] The music in the background is entitled Ashoken Farewell.

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In the beginning, the universe was a single point. But where was that point exactly? What was its location?

As explained in an article in the FYI section of PopSci.com, it was, and still is… everywhere.

In other words, no matter where you are in the universe, you’re at the centre! [1]

It’s answers like these that make my head explode.

I remember when Exhibit Two tried to help me grasp the concept that the universe has no centre. I developed a somewhat similar headache when trying to wrap my kosher samurai brain around the concept while reading the PopSci.com article.

“First, it’s important to know that the big bang wasn’t an explosion of matter into empty space—it was the rapid expansion of space itself. This means that every single point in the universe appears to be at the center. Think of the universe as an empty balloon with dots on it. Those dots represent clusters of galaxies. As the balloon inflates, every dot moves farther away from every other dot. The space between clusters of galaxies expands, like the rest of the universe, at an accelerating rate. (Gravity keeps the clusters themselves the same size.)”

Edwin Hubble first observed this phenomenon in 1929, when he noticed that the light from distant galaxies shifted to the red end of the spectrum, as though it had been stretched as it traveled through space. By measuring the wavelengths of the light, Hubble observed that galaxies were expanding away from each other at a rate proportional to their distance from one another.

In the beginning, the universe was a single point. Where was that? It was, and still is, everywhere. Scientists even have proof: Light from the big bang, in the form of cosmic radiation, fills the sky in every direction.

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[1] I will have to modify my remarks to my then 14-year-old daughter, Exhibit One, that she was not the centre of the universe and that we now have the Hubble Space Telescope photos to prove it!

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On April 24, 1990, the NASA/ESA Hubble Space Telescope was launched into space. In the 22 years since, it has sent back over a million observations.

Here are just some of Hubble’s greatest images, year by year, courtesy of those wonderful space geeks at HubbleCast.

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Articles about ASTRONOMY: http://www.scoop.it/t/science-news?tag=astronomy

(Speaking of milestones, my friendly neighbourhood blog service, WordPress, informs me that this is my 150th posted blog article. Thanks to those who read my musings and thanks to my friends, associates, colleagues, relatives and loved ones as well as the occasional innocent bystanders who constantly provide me with material!)

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