/sci/ - Science & Math

>>4350840
-undergrad student
-grad student/PhD student/PhD candidate
-post grad
I think thats it, however, I'm not from america.

>>4350814
I don't know what you mean with these two levels of models or how you see the world.
I'm pretty sure there is a reality, and what people do (i.e. phyiscs) is associating names with things they observe and then build a mathematical model to predict things, always in therms of the things they came up with in the first place. There are newtonian particles and F=ma, there is the Newtonian Gravitational Force, there are particles in quantum mechanics, the Schrödinger equation, gravitons in string theory, smooth curved specetime in general relativity, there is thermodynamics and so on. These things have to exists in any way, but from an operational point of view, they all have practical meaning. We don't have a name for temperature squared, but we came up with classical trajectories. What if there is some alien species, where the individuals are intelligent but microscopically small, or huge. What if they are not bound to a compact material body like we are? What if they perceive the world in a totally different way, and so they never introduces classical particles in the first place. What if they are so small that the wave way of thinking about matter is totally natural to them. What if they found T^2 to be a useful quantity in their theoris and not just the temperature T. I don't think one should take any of the things like electrons, spacetime and etc. too literal. There is no guaranty that there is a "theory of everything" or that all physica effects are explainable in mathematical terms. But you know, it's obviously possible to come up with models, and in the end you get an iPod.

political back scratching of the cotton industry

What are some websites that you'd recommend for middle school students?

I need some sites (or books) to give to my little brother to get him more interested in science and learning instead of video games

Going to link him to "Charlieissocoollike"'s youtube channel for some casual interesting science as a start