introduction:the human being always attempts to find a way to improve his physical and mental abilities. history shows that, despite the many promotions in every branch of science and technology, we cannot see much improvement in thinking abilities. with the advent of the iinternet and www, many thought that the problem will be solved. but nowadays we can see that the main problem remains: the ...

I am an invisible man. No, I am not a spook like those who haunted Edgar Allan Poe; nor am I one of your Hollywoodmovie ectoplasms. I am a man of substance, of flesh and bone, fiber and liquids—and I might even be said to possess a mind. I am invisible, understand, simply because people refuse to see me. . . . When they approach me they see only my surroundings, themselves, or figments of their...

In this article, we examine the possibility that there exist special scalar-tensor theories of gravity with completely nonsingular FRW solutions. Our investigation in fact shows that while most probes living in such a Universe never see the singularity, gravity waves always do. This is because they couple to both the metric and the scalar field, in a way which effectively forces them to move al...