If the apparent visual magnitude of the Sun is -26.5 and that of the full moon is -12.5, what is the light intensity ratio of sunlight to moonlight received at Earth on the day of the full moon?
Symptoms of a cold sore can include: 1  a tingling sensation, redness and swelling around the lip before the cold sore develops. 2  small, fluid-filled blisters which break open and develop a yellow crust (scab). The scab usually falls off around seven days later.
Cold sores are caused by exposure to the herpes simplex virus. Cold sores, also called fever blisters, are small, fluid-filled blisters on a raised, red area typically around the mouth. Exposure to the herpes simplex virus causes cold sores to appear, and there is no cure for the virus. Using Vaseline Lip Therapy on the areas of your mouth prone to cold sores may help reduce outbreaks and decrease pain associated with a cold sore. Cold sores can appear after exposure to the herpes simplex virus.