In the context of astronomy, _____ is the area visible in an image.
A) the field of view
B) the visible spectrum
C) a reference field
D) point of reference
Question 2
Joseph writes the numbers 100,000,000,000, 3,240,000,000, and 48,000,000,000 as 1011, 3.24 109, and 4.8 1010. In this case, Joseph has used _____ to express the numbers in a simple way.
A) theoretical notation
B) the hexadecimal numeral system
C) the binary number system
D) scientific notation