7 sentences with “relativity”

After studying for hours, I finally understood the theory of relativity.

Einstein's theory of relativity proposes that space and time are relative and depend on the observer.

Einstein's theory of relativity remains a subject of study and discussion in the scientific community.

Hawking's problem was to find a sufficiently difficult research topic for his PhD course. Since research in the field of relativity was rare at that level, it was not easy to find challenging topics.

The Holy Grail of modern physics is a Theory of Everything (ToU) that combines relativity and quantum theory into a single package; a set of equations that explains the totality of phenomena occurring in the universe, from the Big Bang to the atoms of which we are made.

Einstein came up with the idea of relativity by imagining a lift falling because its cable has broken. If a beam of light is passed horizontally through this lift, in the time it takes to pass through the car, the far end of the car has already moved downwards, so that to an outside observer, the beam of light appears to follow a curved path. In other words, gravity bends the light.

The first research path taken was that of brain size: given the incredible mental capacity of certain famous people, it was logical to think that the answer lay in a larger-than-normal grey mass. However, the scales turned out to be negative. While Einstein gave birth to the theory of relativity with an absolutely normal brain, brilliant writers such as Anatole France or Walt Whitman possessed brains of smaller than average size.