Definition of a Phase Diagram

Definition of a Phase Diagram Definition: For a given substance, it is possible to make a phase diagram which outlines the changes in phase (see image to the right). Generally temperature is along the horizontal axis and pressure is along the vertical axis, although three-dimensional phase diagrams can also account for a volume axis. Curves representing the Fusion curve (liquid/solid barrier, also known as freezing/melting), the Vaporization curve (liquid/vapor barrier, also known as evaporation/condensation), and the Sublimation curve (solid/vapor barrier)) can be seen in the diagram. The area near the origin is the Sublimation curve and it branches off to form the Fusion curve (which goes mostly upward) and the Vaporization curve (when goes mostly to the right). Along the curves, the substance would be in a state of phase equilibrium, balanced precariously between the two states on either side. The point at which all three curves meet is called the triple point. At this precise temperature and pressure, the substance will be in a state of equilibrium between the three states, and minor variations would cause it to shift between them. Finally, the point at which the Vaporization curve ends is called the critical point. The pressure at this point is called the critical pressure and the temperature at this point is the critical temperature. For pressures or temperatures (or both) above these values, essentially there is a blurry line between the liquid and gaseous states. Phase transitions between them do not take place, although the properties themselves can transition between those of liquids and those of gases. They just do not do so in a clear-cut transition, but metamorph gradually from one to another. For more on phase diagrams, including three-dimensional phase diagrams, see our article on states of matter. Also Known As: state diagram, change of phase diagram, change of state diagram

Rebuild your career after job loss

Rebuild your career after job loss If you’re reading this, it may be because the worst has already happened: you’ve been laid off or fired. Or perhaps you’re prepping for the doomsday scenario, just in case. Either way, know that a layoff or a firing is not a life-ending (or even career-ending) thing. When it happens, the shock and devastation can lead to pessimism about your next steps. But try to keep these tips in mind if it happens to you. Know that it’s okay to grieve.Job loss is a huge change. Routine, stability, future planning- all of these are likely upended by the news. It’s okay to let yourself feel the range of emotion after it happens, like anger, depression, fear, and humiliation. You may try to put on a brave face, but don’t try to quash the emotions altogether. Acceptance and moving on mean working through the feelings rather than ignoring them.Take it as an opportunity.No, really. It probably doesn’t feel like one- I know when I got laid off, I felt pes simism creeping in right away. But soon I started to realize that I’d hated my job, and this was a chance to start over without having to make the tough decision to quit and walk away. This job loss does take away some of your own agency (we all want things to be on our own terms), but once it happens, embrace it as a chance to start over. Maybe it’s time for a career change?Don’t lie about it.You’re going to need to move on to a new job, and that means finding a way to spin what happened at your last one. It can be tempting to lie about the circumstances under which you left out of a sense of personal pride or fear of rejection, but don’t do it. If you were fired for a reason, that will likely come up during either reference checks or background checks (if it was serious).On your resume, you don’t need to be specific about what happened. But you should be prepared to discuss it in an interview. â€Å"Why did you leave your last job?† is a common default interview question, and it’s pretty much inevitable that you’ll face it at some point. If you were laid off, a response like â€Å"my position was eliminated† or â€Å"the company downsized† is totally acceptable. If you were fired, you can give a general explanation as to why, and explain a) what you learned from it; and b) how that knowledge makes you a better employee. Second chances are not impossible, but you have to make a good case for yourself.Whatever the circumstances, remember that you’re still alive, and you’re still you. The positive qualities you bring to the table are ultimately more important than your past, so as long as you take the time to learn from the experience and think hard about how to repackage yourself, you can turn it into a career opportunity (if a painful one).