Book Review: Black Hole Blues
I bought my copy at a public lecture by the author, Janna Levin. She cuts a striking figure on stage, trim and athletic looking in a black leather suit above dramatically high heels, pacing restlessly as she speaks. Her story is dramatic: the first direct detection of gravitational waves. Face to face, she is a tiny image of concentrated energy. I find it easy to imagine that one career is a bit too small to contain this astrophysics professor, author and artist. Einstein's paper predicting gravitational waves was published in 1916, but their first direct detection needed to wait almost exactly 100 years. Black Hole Blues, and Other Songs from Outer Space , is mostly the story of the building of the giant instruments that aimed to find Einstein's gravitational waves. Why did it take so long? Because gravity is a very weak force - the electrical force between two protons is about a trillion-trillion-trillion times as strong as the electrical force between them. As a