Forrest M. Mims III

Forrest M. Mims III

Forrest M. Mims III (, an amateur scientist and Rolex Award winner, was named by Discover magazine as one of the “50 Best Brains in Science.” His books have sold more than 7 million copies.

Latest from Forrest M. Mims III


Skip the store-bought couplings and make these easy DIY fiber optic hookups. Read more »


Have fun and do science by flying toy rockets with an LED tracking light. Read more »

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Detect motion and even individual footsteps with DIY sensors better than your smartphone’s. Read more »


There is no “Maker in Chief” in the U.S. Constitution, but at least one president, Thomas Jefferson, certainly deserves that title. Read more »


Have you wondered why some sunsets are so spectacular and others so drab? This ultra-sensitive photometer project will allow you to tease out the secrets of twilight and even do serious science by finding the altitude of the dust, smoke, and air pollution that influence the colors of twilight. Read more »


My DIY wearable gadget never sold — but it led to my first article, a kit company, and a career in electronics and science. Here's how a failure became a springboard to success. Read more »


On the 40th anniversary of the Altair 8800 microcomputer: 1975–2015. Though primitive by today’s standards, the Altair 8800 is widely credited with jump-starting the personal computer era. Read more »