PHYS 1902 Lecture Notes - Lecture 2: Mathematical Anxiety, Multiplication Sign, Angular Diameter
15 Feb 2016
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1 lecture 2 and 3: number review/the ce- lestial sphere: finish chapter 1 in the textbook, appendices 1,2, exercises: do all review and discussion and all conceptual self-test; problems 1), There will not be much math in this course, but we will need to use numbers to discuss distances scales, time, and angular measurements on the sky. Please do not fret if you have a math phobia! You will not be required to apply complicated formula or learn advanced math. What we want you to gain is a sense of scale which will allow you to make estimates without calculating anything at all: scienti c notation. In astronomy we deal with vast scales, from the size of the atom to the size of the. Not useful to write numbers like 1, 000, 000, 000. The exponent tells us to multiply the base number as many times as the exponent says.
