In the digital age, children are being exposed to STEM (science, technology, engineering, and math) in order to allow them explore favorite experiments, engineering challenges, and demonstrations ...

Hi, I'm Bill. I'm a software developer with a passion for making and electronics. I do a lot of things and here is where I document my learning in order to be able to inspire other people to make ...

This paper reports a method for micrometer-scale linear and angular displacement measurement based on a gradient grating period guided-mode resonance (GGP-GMR) filter. When the filter is mounted on a ...