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 unmistakable. They are those uncomfortable, visible lesions that always seem to surface just before a big date or work presentation. This viral family, linked to the herpes virus, can cause infections throughout the body, but most commonly presents itself around the lips [Source: Habif ].