Gauge pressure is zero-referenced against ambient air pressure, so it is equal to absolute pressure minus atmospheric pressure. Absolute pressure is measured with reference to an absolute (and theoretical) vacuum. For example, an ordinary pressure gauge reading of zero does not mean there is no pressure; it simply means there is no pressure in excess of atmospheric pressure. Gauge Pressure = Total Pressure â 1 atm. The conversion factor that needs to be used in order to convert between gauge pressure and absolute pressure is atmospheric pressure. By adding a pressure of 1 atmosphere to an absolute pressure, the corresponding gauge pressure can be determined. Gauge pressure is measured with the standard atmospheric pressure as the baseline. Therefore, positive gauge pressures indicate that the pressure is above atmospheric pressure. Conversely, negative pressures indicate that the pressure is below atmospheric pressure.
The worse the blisters are, the longer the burn will take to heal. In some severe cases, skin grafting is required to fix the damage. Skin grafting takes healthy skin from another area of the body and moves it to the site of the burned skin. As with first-degree burns, avoid cotton balls and questionable home remedies.
Medical conditions and skin problems. Many non-dermatologic disorders affect the condition of the skin. A few disorders that may cause skin signs and symptoms include: 1  Autoimmune disease: A butterfly rash across the face is a tell-tale sign of lupus.2  Lupus may also cause other rashes and mouth sores. 3  Those with lupus tend to be very sun sensitive.edical conditions and skin problems. Many non-dermatologic disorders affect the condition of the skin. A few disorders that may cause skin signs and symptoms include: 1  Autoimmune disease: A butterfly rash across the face is a tell-tale sign of lupus.