Chap 3 P  

What is the wavelength range for ultraviolet

electromagnetic waves?

Cap 3 P  

Reprezentați (selectați imaginea) spectrul

densității de putere (energie) pentru semnalele de frecvențe joase

Chap 3 P  Select

the

power  (energy) density spectrum for the

low frequency signals.

Chap 3 P  

Time ↔

frequency properties. What is the shape of the spectrum for

discrete signals ?

Chap 3 A  Select the Fourier transform of the continuous non-periodic signals.

Chap 3 A  Define

II

Dirichlet condition

Chap 3 A

  How is the process of obtaining the white

light from the colors of the rainbow (below) called, that was demonstrated by

Isaac Newton in 1672 in the frequency analysis of signals?

Chap 3 P  Properties and theorems of FT.

What are the expressions of the correspondence representation

- time domain ↔ frequency domain – of the Fourier transform property:

Chap 3 A  S

elect the synthesis

equation (inverse transform) of the non-periodic continuous signals.

Chap 3 A  Select the Fourier transform of the discrete non-periodic signals.

Chap 3 P  Select

the

power  (energy) density spectrum for the medium frequency signals.