Light
In most everyday circumstances, the properties of light can be derived from the theory of classical electromagnetism, in which light is...
Security
Security: Yearly, the stolen research projects reach about 10 billion dollars only in the U S A . Consequently, security becomes an...
The secret to living healthy past age 100
A new study identifies a vital trait to living for (at least ) a century .What is the secret of people who lives healthy beyond the age...