It's a number that you can use to help determine how long you can stay in the sun before getting a sunburn. Does the Sun work?
The sun taught us to be scientists. If the Sun didn't work you would freeze to death. The photosphere is the lowest region of the sun's atmosphere and is the region that we can see.
Neutrons from the Sun collided with the intrastellar medium to produce gamma-rays. Wiki User 2012-01-08 02:13:24. Why is it that if you go out on a bright summer day and spend an hour in the sun, you get a sunburn? Related Questions. SPF stands for Sun Protection Factor. The claim is generally that the sun moves around in a path that’s parallel to the surface of the earth at an altitude of around 3,000 miles…and that it’s about 30 miles in diameter.
The sun, which is the star at the center of our solar system, powers all life on Earth.
Normally the Sun does not make gamma rays, but a flare on June 15, 1991 caused this gamma-ray observation by the COMPTEL instrument on the Compton Gamma Ray Observatory. We could not survive without the light and warmth of the sun, because it is involved in so many processes integral to the survival of the eco systems of the earth. Since sunburns are caused by UV-B radiation, SPF does not indicate protection from UV-A, which can cause cancer and premature aging of the skin. "The surface of the sun" typically refers to the photosphere, at least in lay terms. The sun's magnetic field has two poles, like a bar magnet. The poles flip at the peak of the solar activity cycle, every 11 years. After a few thousand days, they comprehended the sun’s longer pattern—call that a “year”—and from then on, every day of every year, the first astronomers could predict when and where the morning sun would rise and the evening sun would set. While this statement sounds poetic, it is also scientific. The SPF on sunscreen bottles stands for Sun Protection Factor, and refers to how well the sunscreen protects against one type of UV radiation, called UVB (it may be helpful to think B for burning). There is something mysterious about the sun and skin. However, the sun's is composed of the photosphere, the chromosphere and the corona.
With a tan you can go out in the sun and nothing happens. Asked in Home & Garden, Gardening What plants work best in afternoon sun?
You get a sunburn, that is, unless you happen to have taken the time to get a gradual tan.