San Antonio College Library

"It is a search for a view of the universe that unites two seemingly opposed pillars of modern science: Einstein's theory of general relativity, which deals with large scale phenomena like planets, solar systems and galaxies, and quantum theory, which deals with the world of the very small -- molecules, atoms and electrons. In the last few years, physicists have made big steps toward their goal of a completely new theory of space, time and the universe,...

"Of the four fundamental forces of nature, gravity might be the least understood and yet the one with which we are most intimate. From the months each of us spent suspended in the womb anticipating birth to the moments when we wait for sleep to transport us to other realities, we are always aware of gravity. In On Gravity, physicist A. Zee combines profound depth with incisive accessibility to take us on an original and compelling tour of Einstein's...

Most of us take gravity as an assumed part of our living realities, but why? Basic physics introduces us to the concept of gravity from a Newtonian sense, but when you start factoring Einstein into an understanding of gravity, things get weird. For example, gravity may simply not exist. Why? Watch this week's episode of PBS Space Time and find out why gravity may be an illusion!

"Gravity is the weakest force in the everyday world, yet it is the strongest force in the universe. It was the first force to be recognized and described, yet it is the least understood. It is a 'force' that keeps your feet on the ground yet no such force actually exists. Gravity, to steal the words of Winston Churchill, is 'a riddle, wrapped in a mystery, inside an enigma.' And pentrating that enigma promises to answer the biggest questions in science;...

"New fundamental forces of Nature? New forms of 'dark' energy? Signals from epochs preceding the Big Bang? Is our space-time unique? Only a joint study of the three topics examined in this book--gravity, strings and particles--may provide answers to these questions. Such a study may also provide the key to solving one of the most fascinating mysteries of modern science, namely: besides time and the three spatial dimensions, how many other dimensions...

This program studies gravity - the force that keeps people's feet on the ground and tethers Planet Earth to the Sun - and how science managed to discover, quantify, and overcome it.

In The Tide, celebrated science writer Hugh Aldersey-Williams weaves together centuries of scientific thinking with the literature and folklore the tide has inspired to explain the power and workings of this most remarkable force. Here is the epic story of the long search to understand the tide: from Aristotle, who is said to have drowned himself in his efforts to figure out the Greek tides, to the pioneering investigations into the role of the moon...

Primordial black holes may be lurking throughout our universe. How large are they, how many are out there and what would happen if they moved through our solar system?