Doing physics, it's the most tedious thing to be typing everything. Bearing in mind that it's hardly ever words, just equations, greek symbols and long calculations...as well as graphs and diagrams. It's near impossible to do on the laptop.
However, I do like to keep an electronic copy of my work (plus computer text is easier to read than my crap writing) so I use an ICR program. Basically scan my hand written work, it recognises it and converts it to computer text. I choose to leave diagrams as photos on the document. It's been great, my digital notes are now better than my handwritten ones.