03 07 17 - 14:00
Today we are going to talk about lung over expansion injuries and how to treat them. The trend these days is to disregard the issue and believe it only happens to others going deep. Unfortunately, this is a myth. DCS and DCI can occur from only ten meters depth and you, as a going to be Scuba Instructor or Divemaster, need to know how to identify them and how to treat them.
26 06 17 - 14:00
Heat and Water in theory:
As we learned, water absorbs heat faster then air does. But why is that? There are several reasons why heat absorption is greater in water. One of them is that water is denser or has a greater thickness of matter than air. It also means water has more mass = molecules for a given volume. Heat is the energy what gets molecules moving. Hence the denser (more molecules) a substance is, the more energy (heat) it needs, which means it absorbs heat faster then a less denser substance like air for example. Another point is also the bonds within the molecules which are so called weaker or more elastic which needs more energy (heat) to overcome. So to summarize, water needs more heat energy to rise to a given temperature.
12 06 17 - 14:00
Every regulator needs servicing. How often depends on the manufacturer's recommendations, mostly once a year. So, you go to your dive shop, handover the regulator and probably a few days or week later you are back to pick it up. It looks cleaner, there is a small bag with parts and that is about it. You use the regulator again and chances are you don’t really notice the difference (except if you brought in your regulator with some issues). So what’s the point?
« Previous page 1 2 3 4 5 Next page »