September 15, 1999 Page 5 of 13. 3 Sampling of band-pass signals. 3.1 Introduction. The Nyquist sampling theorem states that to get a unique representation of the frequency. content of a signal, the signal must be sampled at a rate twice the frequency of the highest. frequency component of the signal.
A quarter section, often shortened to quarter, is an area of one-fourth of a square mile, or 160 acres (0.65 km2). It was a common size of a tract under Homestead Acts in the United States and the Dominion Land Survey in Canada.
Acres are to conceptualize large numbers. there are 27,878,400 square feet in a section. That number is meaningless due to the conceptualization problem. However when you say there 640 acres in a section that number is more easy to grasp. You can not have the square root of acre ie the square root of 40 acres is a meaningless term. 40 acres is 43,560 square feet x 40 = 1.742,400 square ft. take the square root = 1320. Therefore 40 acres is 1320 ft on each side.