Tag Archives: inner Earth

Paying for Physics

Over 300 years ago, the world worked a lot like it does today. A man writes a brilliant book, but he’s a recluse and lacks charm. He wants to get his science club to print his book, but the  members … Continue reading

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Solid to the Core

The Earth is like a chocolate-covered cherry. A bit bigger and harder to eat in one bite, but there are similarities. Like a cherry, the core is solid, but floats in a liquid. Next comes a thick layer of creamy … Continue reading

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Riding the Moho

  Today is the anniversary of the birth (January 23, 1857) of a brilliant geophysicist with an unpronounceable name (unless you are Croatian) – Andrija Mohorovičić. (You may say On-Dree-Ya Mow-Hoe-Row-Vitch-Itch. Or, like many a grad student, you could simply … Continue reading

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How the Earth’s Mystery Mineral Got Its Name

We seldom get to see a sample of the Earth’s most common mineral. It resides within the mantle at extreme heat and pressure not found on the surface. We think that the mineral resides within the mantle – we are … Continue reading

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A Fast Trip through the Center of the Earth

When I was a child growing up in North American, I was told that if I dug a hole through the center of the Earth, I would emerge in downtown Beijing. (Or Peking, as it was known in English in … Continue reading

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When Tectonics Started

The Earth is the only planet known to have continents adrift. Scientists are rather certain that the drifting began about a billion years into Earth’s history. This means that for a thousand million years, the continents just sat there. Idle. … Continue reading

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The Old Bird Sits Up

Readers of this blog know that I have sometimes pointed at Emperor Lord Kelvin’s fragile suit of clothing. Although his early life was crammed with brilliant science, he was a fumbling troglodyte by age 50.  He became resistant to scientific … Continue reading

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