For example, in the fraction 3/4, the numerator, 3, tells us that the fraction represents 3 equal parts, and the denominator, 4, tells us that 4 parts make up a whole. The picture to the right illustrates 3 4 {\displaystyle {\tfrac {3}{4}}} or Â¾ of a cake.
The Causes of Sunburn Blisters. Sunburn blisters are a result of overexposure to the UVA and UVB rays in the sun. â¢ UVA. These harmful rays penetrate deep into the bottom skin layers and damage the production of new skin cells. High doses of UVA rays will cause sunburn blisters.
Sunburn (also called erythema) is caused by overexposure to ultraviolet radiation (UV rays). While the symptoms are usually temporary (like red skin that is painful to the touch), skin damage is cumulative throughout a person's life and can develop into serious long-term health effects, including skin cancer. Mild sunburn results in skin irritation and redness and can be safely treated at home.