What is the leading theory of everything?

LQG or loop quantum gravity is currently one of string theory’s biggest contesters for the title of “theory of everything”. The general idea for loop quantum gravity is that space is not continuous but is broken up into tiny chunks or quantas: gravitational fields about 10^-35 meters across.

What are the limits of Newtonian physics?

In physics, the Newtonian limit is a mathematical approximation applicable to physical systems exhibiting (1) weak gravitation, (2) objects moving slowly compared to the speed of light, and (3) slowly changing (or completely static) gravitational fields.

What does the theory of special relativity explain?

The theory of special relativity explains how space and time are linked for objects that are moving at a consistent speed in a straight line.

Is the edge of the field of physics getting harder?

But especially when the edge of the field is expanding; and even harder still when the rate of expansion is accelerating. John recently helped Physics World create a special 25th anniversary issue where they identified the five biggest breakthroughs in physics over the past 25 years, and also the five biggest open questions.

When was Einstein’s theory of general relativity published?

This formed the basis of his general relativity, published in 1915. Before Einstein, astronomers (for the most part) understood the universe in terms of three laws of motion presented by Isaac Newton in 1686.

What did Albert Einstein say about simultaneity?

“Einstein concluded that simultaneity is relative; events that are simultaneous for one observer may not be for another,” the encyclopedia stated. “This led him to the counterintuitive idea that time flows differently according to the state of motion, and to the conclusion that distance is also relative.”.