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Showing posts with the label sunlight

UNDERSTANDING THE WORLD BETTER

  Astronomers have discovered that they do not know what makes up over 90 percent of the universe. What is more, the discoveries that led to question their understanding of the fundamentals of physics itself. Of course, such questions are nothing new.           Toward the end of the 19 th  century, physicists observed something odd about the speed of light. They found that relative to an observer, light always traveled at the same speed no matter how fast the observer was moving. But that seemed to defy natural law! The problem was addressed in 1905 in Albert Einstein’s special theory of relativity, which showed that  distance [length],   time,  and  mass  are not absolutes. Then, after a flash of intuition that he termed “the happiest thought of my life,” Einstein began to develop his general theory of relativity, which he published in 1916. In this revolutionary work, Einstein wove  gravity ,  space,  and  time  together and refined the physics of Isaac Newton.                       

WHEN BEAUTY TIPS BECOME DANGEROUS

                                                         The sun is the greatest source of energy you can think of and it can also be a source of great concern to the health of an individual. It is also a vital ingredient in beauty tips.               Cancer is overwhelmingly caused by where you are, what you do, and what happens to you in life, rather than by what you are that is your genetic makeup. Environmental factors are more important than gene factors, smoking causes about 35 percent of cancer, while another 30 percent appear to be related to diet and another fraction caused by exposure to sunlight. Genetic factors play a part in prostate, colorectal, and breast cancer, even if you have a family history of cancer what you do with your life is much more important.               Vitamin D is needed for absorption of calcium so that the mineral can take its place in bone and shore up the skeleton against fractures. 90 percent of our vitamin D is made in our skin upon ex