/sci/ - Science & Math

What are some ways to "contribute" to science at home? I don't have a degree but I'm a bit of a hobbyist. Was never big on math but I did love the simpler stuff done with data when I was in highschool, as well as set theory, logic, and graph theory.

Anywhere to learn about mechanics?

Hey /sci/, I need to learn chemistry for my major (MechE), but I'm not sure how to go about it. I have a pretty recent college textbook (I had planned on taking the class last semester, but ended up dropping).

Are there any good online resources I could utilize, or would reading a text book diligently be the best way to learn?

Pic unrelated.


Chemistry question /sci/ , how are you supposed to classify strong electrolytes, weak electrolytes, and non- electrolytes?

sheet has KF, NH3, HF, HNO3 as examples to sort. I'd like to know how to sort each rather than just where each goes cause I need to know how to do it.

Excuse the irrelevant picture.

So /sci/, I just attempted to answer the first half of the first exam on the MIT OCW Principles of Chemical Science 5.111 course. I seriously could not answer any of the photoelectric effect questions. I managed to answer the 2nd half of the exam, totaling my overall score to about a 40/100.

For those who have gone the entire way, how important is the photoelectric effect in Chemistry and Chemical Engineering? I've never taken Chemistry on the college level before. I find Chemistry fascinating, but flipping through the first exam and only finding just a few questions that I could successfully answer was not very promising. (I did watch all the lecture videos, but there's no homework offered.) I ask primarily because I'd like to learn more about Chemistry and perhaps be a chemical engineer, but if I'm struggling with the beginnings, should I consider another profession?

I went thumbing through Exam #2 and #3 on 5.111, and I knew more stuff on those two exams than I did on this first exam. I'm very familiar with chemical bonding, reactions, and thermodynamics, in my opinion.

Is it possible to learn <span class="math">much[/spoiler] from the MIT Open Courseware courses? I want to self-relearn Chemistry over the summer and attempt to CLEP out of Introductory Chemistry & Lab. I thought I did pretty well with Chemistry in high school, but then again, my teacher just gave out free As sometimes.

I've tried doing Open Courseware with things such as Mandarin Chinese, but I can't figure out if there's not much material on the site or if I don't know how to use the website at all.

Thoughts?