Studies how our universe behaves.
Many great things came from trying to understand how this world is put together and what laws govern it.
Perhaps we can replicate a universe like ours in the future. One of the more interesting thoughts to ponder on is how complexity can emerge from rather simple rules. One example of that is cellular automata and the infamous Conway's game of life.
- What is energy?
- There's no satisfying definition beyond "the quantity that is conserved over time." This may sound arbitrary and ad hoc but it emerges from this deep mathematical principal called Noether's theorem that states that for each symmetry (in this case, staying the same while moving forward or backwards in time), there is something that is conserved. In this context, momentum is the thing that is conserved over distance, and angular momentum is the thing that is conserved through rotations.
- The less rigorous explanation is that it's essentially the currency used by physical systems to undergo change.
- So You Want To Learn Physics...
- The Astonishing Simplicity of Everything
- The Map of Physics
- The theoretical minimum - Has pretty amazing courses.
- Fun to Imagine
- Stephen Hawking had pinned his hopes on 'M-theory' to fully explain the universe—here's what it is
- Ask HN: How to self-learn electronics?
- Conceptual illustration of time and space distortion near a mass
- Amazing Sand Pendulum
- Small physics lectures
- What in physics is fundamental?
- The World in UV
- Why does it take a million years for a photon moving at the speed of light to reach the sun's surface from its core?