Forbes contributors publish independent expert analyses and insights. Technology journalist specializing in audio, computing and Apple Macs. Last month, a reader contacted me to point out that a ...

If you've ever called an HVAC specialist to inspect your home before, then you've probably noticed them often holding a camera-like device showing various shades of reds and blues. That's a thermal ...

Yes, sometimes a hot or not is more than enough information to tell you if something is working. If you have a dead cylinder, if one of your primaries is cold, that’s kind of a giveaway. But, what if ...