Question

identify three ways we use analog and digital signals in our everyday lives. Describe how radio telescopes are used to explore space.

Answer 1

We use analog and digital signals in our everyday lives with the radio, the cell phone and with our own computers. our computers and our cell phones are all digital now but radio's are still considered analog. Radio telescopes explore space by using radio waves and signals to almost like scan space and collect data like a sonar in a submarine. 

Answer 2

Radio telescopes are specialized “antenna” and a “radio receiver”. This is used to receive radio waves. It observes space by receiving radio signals.

Analog signal transmit data in the form of wave

Digital signal will be in the form of ones and zeros. High value represents 1 and low value represents 0. It is like on and off switch.

Eg.

Analog signal & Digital signal:

Aneriod barometer

digital signature

Digital photography

Digital Satellite system

Digital television

Cell phones

Analog computer