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July 15, 2021 Archives

## Thursday, July 15, 2021

### TRACKING WITH CLOSEUPS: Peter Shor—The Story of Shor's Algorithm

Shor's algorithm, invented in 1994, demonstrates that a quantum computer can factor integers in polynomial time. It was one of the first quantum computing algorithms to solve a real-world problem, and is the basis of the claim that a functional quantum computer with a sufficient number of quantum bits (“qubits”) will render many present-day encryption and authentication systems insecure..

### CONTINUITY: From 1959—“Mission: Sonic Boom”

“It's the Sound of Security™!”

### TRACKING WITH CLOSEUPS: Beautiful Visual Proof of Fermat's Two Squares Theorem

Here are details of Fermat's two squares theorem and proofs over the centuries.

### CONTEXT: Crow Skiing down a Roof

Here is a bird, using a tool, in order to play.

### CONTINUITY: Napier Deltic—Triangular Opposed Valveless Diesel Engine

Here is more on the Napier Deltic.