The God Equation

Résumé du livre

Michio Kaku, co-founder of the string field theory and professor of theoretical physics at the City University of New York, is the author of a number of best-selling books, including Hyperspace and Physics of the Impossible. In addition, he also hosts the Science Channel’s Sci Fi Science: Physics of the Impossible along with two radio programs, Explorations in Science and Science Fantastic.

At the heart of the galaxy M87, 53 million light-years away, lies a black hole with a mass five billion times that of the sun, whose immense gravity consumes everything nearby, even light. Once dismissed by Einstein as impossible, black holes are now recognized as common and valuable for advancing scientific theories. Deep space serves as a natural laboratory, revealing phenomena like Hawking radiation, which bridges quantum mechanics and gravity, and the cosmic microwave background, which highlights quantum forces shaping the early universe. Yet, mysteries like dark energy remain unsolved. Similarly, Rutherford’s 1910 experiment revealed the atom’s mostly empty structure, challenging classical physics and paving the way for quantum mechanics, which governs subatomic behavior. Einstein’s theories of relativity further revolutionized physics, showing that time, space, and gravity are not fixed but relative and shaped by mass and motion. While his work explained gravity’s curvature of space-time, it couldn’t reconcile with quantum mechanics, which describes the universe’s other three forces: electromagnetism, the strong force, and the weak force. The Standard Model unified these forces but excluded gravity, leaving room for theories like string theory, which posits vibrating strings as the foundation of particles and introduces extra dimensions to resolve inconsistencies. Though elegant, string theory lacks experimental proof, leaving its potential to unify physics as an open question. These scientific pursuits reflect humanity’s enduring quest to uncover the universe’s underlying order, from its smallest particles to its vast cosmic expanse.

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