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 is an example of a first-degree burn. Second-degree burns cause blisters and have more pronounced swelling. The skin may slough (peel). Third-degree burns cause white or black charred skin and loss of pain sensitivity (insensate) because of nerve damage in the deeper tissues.