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Hi everyone, video 2 on the pH diagram, applied to refrigeration and air conditioning systems, has arrived. In today's video, we will address the subject of pressure, we will talk about isobaric lines, and also converting gauge pressure into absolute pressure and BAR. I would like to ask for your feedback, especially on this video, which was recorded on a computer screen, unlike what I do when I record in class. Please tell me what you think, so I can make decisions about the next videos. The video is long, but there is no way, there is no way to talk about this subject in 10 minutes. Stay tuned for the next video, where we will talk about Enthalpy. Thank you very much everyone, and see you later.