How to Make a Particle Accelerator, In Under 5 Minutes
An under-5-minute explanation of how you make a particle accelerators.
When we read about the latest in physics, we’re so excited by some strange new particle that we may take for granted the high-tech device that allowed physicists to make their discovery. We know vaguely what the Large Hadron Collider (LHC), for example, is — a particle accelerator — and we know where it is — beneath the France/Switzerland border near Geneva — and we know it smashes atoms after spinning them around a 27-kilometer ring. But how do they get those atoms moving? Do they just pour them into one end and shout, “go?”
In less than five minutes, one of the people who designs particle accelerators, Suzie Sheehy, explains how these amazing beasties work and how you build one. Well, not you, or me, but a team of very smart people like her.
The LHC is the largest machine in the world. Here’s just a bit about the thousands of magnets it contains to give you a sense of the collider’s scale, and of the tech involved. The LHC has 1232 15-meter dipole magnets to bend its particle beams, and 392 5-7-meter quadrupole magnets to focus them. Another kind of magnet pushes them together to increase their chances for a productive collision. Oh, also, the magnets have to be cooled down to ‑271.3°C, which is colder than outer space.
These five main food groups are important for your brain's health and likely to boost the production of feel-good chemicals.
We all know eating “healthy” food is good for our physical health and can decrease our risk of developing diabetes, cancer, obesity and heart disease. What is not as well known is that eating healthy food is also good for our mental health and can decrease our risk of depression and anxiety.
Infographics show the classes and anxieties in the supposedly classless U.S. economy.
For those of us who follow politics, we’re used to commentators referring to the President’s low approval rating as a surprise given the U.S.'s “booming” economy. This seeming disconnect, however, should really prompt us to reconsider the measurements by which we assess the health of an economy. With a robust U.S. stock market and GDP and low unemployment figures, it’s easy to see why some think all is well. But looking at real U.S. wages, which have remained stagnant—and have, thus, in effect gone down given rising costs from inflation—a very different picture emerges. For the 1%, the economy is booming. For the rest of us, it’s hard to even know where we stand. A recent study by Porch (a home-improvement company) of blue-collar vs. white-collar workers shows how traditional categories are becoming less distinct—the study references "new-collar" workers, who require technical certifications but not college degrees. And a set of recent infographics from CreditLoan capturing the thoughts of America’s middle class as defined by the Pew Research Center shows how confused we are.
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