We can't directly measure the Earth's core, so we study its magnetic field. What about the early core? That data is stored in ancient rocks.
The Earth Magnetism Lab is where Aleksey Smirnov, an associate professor of geophysics, peels back the layers of old data in rocks and meteorites. The lab is in the very bottom of the Dow Building on campus and Smirnov's basement is way cooler than ours. We politely call our University Marketing and Communications floor the "garden level."
A lot of creativity happens in our garden-level basement. But we don't always get to see where the magic happens—or rather, The Science. So every once in a while, we set up lab tours; this time, we found out why they don't allow any hammers on the floor of the Earth Magnetism Lab. (You'll have to read all the way through to find out why.)
The hammer thing: think about it. In a magnetically shielded room, where precision equipment rules with an iron fist, would you want any metal about that could warp the low-magnetic environment? No. So, don't leave your hammers on the floor.
Michigan Technological University is a public research university, home to more than 7,000 students from 60 countries around the world. Founded in 1885, the University offers more than 120 undergraduate and graduate degree programs in science and technology, engineering, forestry, business and economics, health professions, humanities, mathematics, and social sciences. Our beautiful campus in Michigan’s Upper Peninsula overlooks the Keweenaw Waterway and is just a few miles from Lake Superior.