High school and early college Classical Physics is the best! There are all those amazing equations that make the whole universe (or at least the part of the universe that we are in touch with) seem easy to understand. On those days when clarity strikes extra hard, you can’t help but want to pat Mr Isaac Newton on the back, and let him know how much you appreciate him sharing his insight with the authors of your textbook.
Ahhh… the joys of studying Physics! Just when you think you have it all figured out, you discover that the equations you came to grips with are simplifications, and it’s going to get a lot more complicated before the mist clears and things start to make sense again. That’s when you realize that you need more than just coffee to make it. (Isaac Newton bringing you a pot of coffee and then sticking around to help with your homework would definitely make things easier.)
When it’s 3 am and you still haven’t finished your tutorial homework, and you know it’s due at 7:45 am… Yes, you know that you need your coffee served in a mug that can practically think for you. CafePress has it all figured out with the Physics Cheat Sheet mug. Just add coffee, and you will have those vector diagrams drawn and the problems solved in a jiffy.