To answer the question in the title, we use it as a measurement of pressure. REALLY, it is a measurement of distance. First, any scale CAN be used to measure vacuum (negative pressure) and positive pressure. The trick is knowing which is best suited for which and the size of the scale. Larger units of […]

So, I hear you're just finishing trade school. Well done. You chose to take an excellent path, and now your journey is just beginning. How this will go is really up to you, and that's a good thing! You aren't going to be forced in one direction or another; you get to choose. Let's talk […]

It's always good to reaffirm some of the basics of energy, work, and matter, as these five rules are some of the most basic and important. The First Law of Thermodynamics States that energy cannot be created or destroyed. It can only change forms or be transferred from one object to another. If you'd like […]