Memorization for Physics/Engineering

[phrontist]

So, I've just begun my second quarter of IBH Physics I, a class I've wanted to take since my age could be expressed with my fingers. I've also just picked up The Amazing "Pocket Ref", and while it will probably be able to supply me with all the constants and misc. figures I'll ever need, I'm thinking about tidbits worth memorizing. What does the CD community think worthy of memorization? Real Engineers: What have you actually bothered to memorize? Things that I've thought of flashcard-ing right now are:

• The IBH Physics Equation sheet (Duh)
• Gravitational Constant
• Avogadro's Constant
• Greek Alphabet
• Inches-Centimeters Conversion factor
• Trig Identities - Ah, but which should I really commit to memory? Which will really be useful in calculus? Which will be helpful in calculus?

I'm not just talking about things I need to memorize, but things that are handy to know.

Stock your mind, stock your mind. It is your house of treasure, and no one in the world can interfere with it... You might be poor, your shoes might be broken, but your mind is a palace! - Angela's Ashes