How do I check my cloud cover?

In meteorology, cloud cover is measured in oktas, or eighths of the sky . If you look up at the sky, and mentally divide it into eight boxes, then imagine all the cloud you can see squashed into these boxes. How many boxes does the cloud fill? This is how many oktas of cloud there are.

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What is the concept of radar?

radar, electromagnetic sensor used for detecting, locating, tracking, and recognizing objects of various kinds at considerable distances . It operates by transmitting electromagnetic energy toward objects, commonly referred to as targets, and observing the echoes returned from them.

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