Theoretical physics is a branch of physics that uses mathematics and abstractions to to explain and predict natural phenomena, rather than using physical experiments. Unlike experimental physics theoretical physics tends to blur the lines between mathematics, natural science, and philosophy.


Factoids tagged with "Theoretical Physics"

Potentially, Everything is Light Fact

Nikola Tesla was said to have said “everything is light.” That is potentially correct. In theory, the universe could be explained by electromagnetic energy.

At Its Core, Chemistry is Physics Fact

On a fundamental level, chemistry can be explained by physics. The atoms that make up the periodic table elements are themselves made of quantum particles.

Nature Abhors a Vacuum Fact

Aristotle once postulated “horror vacui” (Nature Abhors a Vacuum). It turns out nature really can’t stand a perfect vacuum.

Einstein Was a Poor Student Myth

Einstein wasn’t a poor student. Despite minor troubles in French and the Humanities, Einstein was a prodigy in math and physics from a young age.

Light is Both a Particle and a Wave Fact

Light is a particle (a photon), that acts like a wave (“both a particle and a wave”), which can be measured as an excited quantized state of the electromagnetic field.

Physics is Different than Metaphysics Fact

Physics is a branch of physical science rooted in math that asks “how does it work?” Metaphysics is a broad branch of philosophy that asks, “What is its true nature?”

The Universe is Mostly Empty Space Myth

The universe and everything in it, including humans, is mostly “empty space”. However, space is not actually “empty”, it’s filled with quantum fields and dark energy.

Time is Relative Fact

Time is relative to speed and gravity (time dilation), and so is space (length contraction). Light speed is constant for all observers, so time and space can’t be.

Blog Posts tagged with "Theoretical Physics"

What is Light?

We explain “light,” both as electromagnetic radiation within a visible portion of the electromagnetic spectrum, and as electromagnetic energy carried by photons.

A List of Dualities

Here is a list of the fundamental dualities relating to human nature and the physical and conceptual universe.

Reference Frames Examples (Physics)

Reference frames and relativity in physics explained using math-free examples. We cover: frames of reference, inertial frames, accelerated frames, and relativity.

The Physical Constants Explained

The physical constants are measurable properties of the physical universe that don’t change, everything else is relative to these constants.