Four years later, general relativity made Einstein himself a celebrity. If gravity curves space, he had realized early on, a light beam passing near a massive object (say, the sun) would be deflected from its course. That deflection would shift the apparent position of the source of the light (say, a distant star).
Median sunscreen price was US$1.70 per 10 g. Assuming that standard sunscreen application recommendations (2 mg/cm 2) were followed, the median cost to the family varied from $178.20 per week (if children were 2-year-olds) to $238.40 per week (if children were 10-year-olds).ltraviolet (UV) radiation is a known carcinogen and sun-protection strategies, including sunscreen use, have long been advocated. However, many individuals fail to use sunscreen adequately. Sunscreen cost may contribute to poor compliance.
You need to use a sunscreen because it protects your skin from UV damage and sunburn. Sunscreens are over-the-counter products that come in lotions, gels, ointments and sprays.The strength of the sunscreen protection is measured as SPF--or sun protection factor--which typically ranges from 15 to 45.veryone needs sunscreen to protect their skin from damaging UV rays from the sun and sunburn. Using sunscreen products decreases the chances for sunburn and can prevent skin cancer or malignant melanoma.