Astronomy

High-Res Spectrograph

High-Res Spectrograph

Nearly 200 years ago, Joseph von Fraunhofer built the first spectroscope and saw dark lines in the spectrum of the sun. This led him to discover that you can determine...

Posted by Simon Quellen Field

Categories: Science | No Comments


Homemade Yagi Antenna

Homemade Yagi Antenna

One of my favorite things to do is talk with other ham radio operators through satellites or the International Space Station (ISS). To do this, I stand on a rooftop...

Posted by Diana Eng

Categories: Electronics, Science | No Comments