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Angular resolution

The angular resolution of a 30 meter diameter radio telescope observing a radio signal of 21 centimeters would be X arcseconds,while the angular resolution of the fully dilated human eye,with diameter of about 5 mm, gathering light at an average of 6x10^(-7) meters in wavelength would be Y?

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because, angular resolution is given as:
<br>R = 1.22*lembda/D radian
<br>For X: lembda = 21 cm (HI ...