Connecting the p-type region to the negative terminal of the battery and the n-type region to the positive terminal corresponds to reverse bias. If a diode is reverse-biased, the voltage at the cathode is comparatively higher than the anode. Therefore, no current will flow until the diode breaks down.
When you breathe out, or exhale, your diaphragm relaxes and moves upward into the chest cavity. The intercostal muscles between the ribs also relax to reduce the space in the chest cavity. As the space in the chest cavity gets smaller, air rich in carbon dioxide is forced out of your lungs and windpipe, and then out of your nose or mouth.
1. Exhale completely, as if you're blowing out the candles on a very big birthday cake. . . . . . 2. Bend over. This expels the last bits of air from your lungs. When you're totally out of air, don't let any air come into your throat. . . . . . 3. Stand up. This increases lung volume, so air will want to flow into your lungs, but don't breathe. Wait until your body needs a breathâ10 seconds or so.