Rule of Thumb

MEASURING SOMETHING IN THE SKY

You can describe the location of objects that are low in the sky by holding your hand in front of ...

You can describe the location of objects that are low in the sky by holding your hand in front of you at arm’s length. With your palm facing in and your pinkie on the horizon, the width of your hand covers 15 degrees of arc above the horizon. — Hugh Crowell, Columbus, Ohio

12/14/14

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