Question

to calculate the diffetence between the local times of any two places on the earth
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Answer 1

Answer:

To calculate the difference between local time of any two places on earth you must know their longitude values. As an example I will use the local time of Delhi, India and Manila Philippines. Their latitudes and longitudes are: Delhi 28.7041° N, 77.1025° E, Manila 14.5995° N, 120.9842° E.

Round of the longitudes to the nearest multiple of 15 degrees. Delhi = 75° and Manila = 120°

Subtract 120° - 75° = 45°

Divide the difference by 15° since 1 hour is equivalent to 15°

45° / 15° = 3 where the quotient is the difference in local time of the two specified locations. The difference in local time between Manila and Delhi is 3 hours.

Manila is advanced by 3 hours compared to Delhi. If it is 9:15 A.M. in Manila it is only 06:15 A.M. in Delhi.

hope this will help you

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Answer 2

Explanation:

Ground or Earth

A ground symbol (IEC symbol 5017) identifies a ground terminal. It can be used for a zero potential reference point from where current is measured. It is also for electrical shock protection.