A while back in the school-year we were doing logs, and logarithm. We learned the power law, and such. It really annoys me when my teacher just throws something on the board like log and then shows us laws to remember. I don't even know what log is. Does it stand for a number? or is it just something in between to allow you to switch things around. What is a natural log too? All I know is its base e which is 2.718. Last question is how do engineers use log in the real world to builds bridges, towers, etc. Anyways ease on the flamming I am just trying to learn or better understand what I have learned. I feel like I understood it before but have forgotten since I never reviewed it after the test about 5 months ago. Thanks.