Can barotrauma be caused by pressure differences from an explosion?
I think it can. The human threshold of pain is about 120 dB. That is a pressure of 200 Pa. Engines can reach about 140 dB ~ 50000 Pa ~ 0,5 bar. An explosion can reach far more than 0,5 bar. Barotrauma is caused by diving, about Pressure differences around 3 - 10 bar. So I think Explosions can cause it when you are in a room.
What can happen if you had a sudden drop on boiler steam pressure without a corresponding drop in boiler water temperature?
It was caused during an experiment on the plant, when the reactor became unstable and this caused a surge in steam pressure which blew off the top of the reactor and ejected active material like fuel and graphite. There followed a reactor fire as the graphite moderator was exposed to the atmosphere.
Because the more air pressure there is, it moves the winds in all directions because the air pressure goes in all different directions. That is why we are not flat right now. Think about it - "air pressure" means air is exerting pressure. If there are differences, air in one area is exerting more pressure than air someplace nearby. So the air with the greater air pressure pushes into the air that is not pressing…
Differential heating causes wind because the air over one surface being warmer than the air over another results in different air pressures. Wind is caused by air moving from a high pressure system to a low pressure system. This requires differences in air pressure, which is caused by differential heating.