What about brake fluid which is said to be incompressible. When I push down the brake pedal, the master cylindre pushes the brake liquid inside the hoses which tightens the brakes immediately? So what is the speed of propagation in this scenario if it cannot be faster than c even though brake fluid seems incompressible?
We invite you to explore the history of our department and its contributions to physics research and education. The links to the right present a decade-by-decade "time capsule" of critical research breakthroughs, innovations in teaching and learning, and events that shaped the culture of physics at Illinois. You'll become acquainted with the physicists who defined the "Urbana spirit" while making seminal discoveries that changed the world.
For questions about these pages, contact Celia Elliott (217.244.7725), the unofficial Physics archivist. A limited number of Professor Lazarus's excellent monograph, The Loomis Legacy, and Dedication of the Loomis Laboratory of Physics, which contains much of Professor Almy's Century of Physics, are available; write to Celia if you would like a copy.
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