https://www.wolframalpha.com/input?i=50+microarcseconds+*+%282.5ft+%2F+1+radian%29 https://www.wolframalpha.com/input?i=50+microarcseconds+*+%2... The answer i

https://www.wolframalpha.com/input?i=50+microarcseconds+*+%282.5ft+%2F+1+radian%29 https://www.wolframalpha.com/input?i=50+microarcseconds+*+%2... The answer is ~200 picometers. Wolfram lists some helpful comparisons: 1/2 the distance between base pairs in DNA 3x the atomic diameter of helium (the smallest atom) Suffice to say you'd have a hard time seeing it as it would be 3,000x smaller than the wavelength of visible light.