Although this course is designed for non-science majors, some elementary mathematics is required. You are expected to have had high-school algebra, and a small amount of geometry and trigonometry. The material in this hand-out is intended for review and reference. If you are having problems with the math, I would encourage you to come to my office hours or email me. Units Most astronomers use the cgs system of units.
Units are very important to all sciences.
Keep careful track of the units in your calculations so that you know what units your answer is in. The exponent is equal to the number of zeros in front of the one. Calculators A calculator is recommended for this course. Two important functions you will need are raising a number to a power and entering exponents. One of the most common mistakes in Astro 11 labs is entering exponentials incorrectly.