The Brain’s Building Blocks: Of Protons and Voxels

What’s in a brain? That which we call a voxel by any other name would sound far less confusing.

Imagine all of the atoms in your brain. Now imagine how these atoms might behave inside of a giant magnet. Fortunately, there’s a technique that makes this thought experiment possible. Structural magnetic resonance imaging (MRI) uses the behavior of basic building blocks—like atoms and their protons within—to form a truly interdisciplinary technique that spans physics, biology, and computer science in order to “photograph” the brain.

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What Happens If You Stick Your Head in a Particle Accelerator?

What would happen if you stuck your body inside a particle accelerator? The scenario seems like the start of a bad Marvel comic, but it happens to shed light on our intuitions about radiation, the vulnerability of the human body, and the very nature of matter. Particle accelerators allow physicists to study subatomic particles by speeding them up in powerful magnetic fields and then tracing the interactions that result from collisions. By delving into the mysteries of the Universe, colliders have entered the Zeitgeist and tapped the wonders and fears of our age.Continue reading