The defining feature of a multimeter is that it requires the user to select the function and range required for testing through a rotary switch or buttons. Contrastingly, GS38 emphasises that test ...

Hi everyone, Randy here again. I guess I'm not screwing up as bad as I thought because those magazine editors keep asking me to write another column. They said as long as I have something to talk ...

Explore how a basic LED can be used as a tiny solar cell, generating measurable voltage under sunlight. This hands-on ...