The author of this website is Andy Yao. I'm a software dev by trade, and studied at the University of Michigan.I tend to use the tower of Babel as a profile picture.

My website is built in the structure of a blog. In practice, I will talk about topics that interest me and past experiences.

Ask a physicist what energy is, and they’ll have a pretty fast answer for you. Ask most ordinary people (with all due respect to physicists) what energy is, and they too, will have quick responses. For a physicist, energy is a relative state. It is the capacity to do work, or store change. It is, in a sense, the lack of entropy. Objects all have various levels of energy, and so the interesting question becomes not what level of energy an object might have (for every material under the sun operates at a different baseline), but instead how that energy flows and changes– delta E, ΔE, the change in energy.