"Relativity," authored by Albert Einstein, delves into the revolutionary ideas of time and space. Einstein presents his theory of relativity, which challenges traditional notions of absolute time and space, proposing that measurements of time and distance are relative to the observer's state of motion. This groundbreaking perspective reshapes our understanding of the universe and interlinks the fabric of space and time in a manner previously unimagined. The book explains both the special and general theories of relativity, making complex scientific concepts accessible to a wider audience. Einstein uses thought experiments and clear analogies to illustrate how the laws of physics apply universally, regardless of the observer's frame of reference. This clarity helps demystify the implications of his theories for readers who may not have a strong physics background.