QUIZ: Fourier

Who was Joseph Fourier?

1. "... was a French mathematician and physicist born in Auxerre and best known for initiating the investigation of Fourier series and their applications to problems of heat transfer and vibrations." (Wikipedia)
2. "...was an influential French scholar whose work was important to the development of mathematics, statistics, physics, and astronomy."
3. "...was an English philosopher and physician, widely regarded as one of the most influential of Enlightenment thinkers and commonly known as the 'Father of Liberalism."

Are Computers and other digital devices analog at heart?

T Computers are gated by clock speeds that determine how quickly they may process information. These clocks deliver oscillations that are sampled at strategic points to deliver bitwise information. Clock speeds are measured in cycles per second.

Low frequencies are characterized by

1. gentle transitions from dark to light
2. gentle transitions from quiet to loud
3. powerful audio signals that resonate large objects
4. all of these

look at this picture. The high frequencies are:

1. on the left
2. on the right
3. at the top

What is the relationship between waves and signals?

1. nothing -- they are the same.
2. waves carry signals
3. waves are signals