ASTR 1101 Chapter : CW8
Document Summary
[the angular size of the moon is the same as the angular size of a. If you hold up a dime just under 2 meters from your eye, Classwork #8 (1) it will almost exactly cover up the full moon. I measure the diameter of dimes to be 18 mm (0. 018 m). What is the apparent angular size of the moon? . 0. 1 rad = 5 d=2m=2000mm dime held at 2 meters distance. Use the small angle formula {d= d}, where d is the diameter of the dime, and d is the distance to the dime. Note, since we are happy with an approximate answer, for convenience in the math, i"ll approximate 18mm by 20mm. =d/d = 20mm/2000mm = 1/100 = 0. 01, with the units being radians. ] (2) what is the approximate angular size of the sun? . 0. 1 rad = 5 to that of the moon.
