Brainlies ! why do radio telescopes convert radio waves (analog signals) to electrical (digital) signals for analysis?

Radio telescopes are devices used to capture radio light waves, bring it to focus, overdraw it and and use the data for processing and analysis. These devices are also used to study naturally occurring celestial bodies. Radio telescopes are telescopes that are specially designed for observation of long light wavelengths. These radio light waves, that are raw analog signals are converted into digital signal so as to create and distinguish fine details in the universe. This property is known as angular resolution. This will enable the operator to produce a high resolution view of the sky to be used for astronomical studies and observations.

the answer that best describes the relative refractory period in the neuron is the resting membrane potential is restored, but concentrations of sodium and potassium are not restored to their original state.

the refractory period is the time during which another stimulus given to the neuron will not lead to a second potential. thus, because na+ channels are inactivated during this time, additional depolarizing stimuli do not lead to new action potentials.  

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