Do you know why !!! 4 minutes of earth rotation doesn't make 12 midnight becoming 12 noon
FACT OF EARTH ROTATION ON ITS ORBIT
Earth rotate in its
axis in about 23 hours and 56 minutes & 4 second is Sidereal Day but the
solar day is 24 hours. This 4 minutes’ gap makes 12 hours gap in 6 months. It
means after 6 months; 12:00 am night becomes 12:00 pm day but it never happens
do you know why ?
Earth doing 1 orbit on 360 degrees’ rotation on its axis, in 23
hours and 56 minutes and 4 seconds, this is known as the sidereal day.
In normal clock, the 24-hour day is known as the solar day.
But you know Earth also rotates around sun also & it rotates
in about 365.25 days, which means if Earth does not rotate on its axis then
also it complete 1 day after 1 rotation around sun. We can say 1 day will become
1-year long.
Earth Rotates on its axis as well as around the Sun So it
completed 360 ⁰ in 1 days & 360 ⁰ in 1 year or we can say it is doing 361⁰
in 1 day & that 1 extra Degree counts 4 minutes
That is why 1 day
becomes 24 hours long.
Let’s Understand Some Definitions
Sidereal Day – 1 sidereal day is 23 hour 56 minutes
4 seconds = 86164 seconds long
Sidereal Year – 1 sidereal year is 366.25 days’ long
Solar Day - 1 solar day is 24 hours’ long
Solar Year - 1 Solar
year is 365.25 days’
long
Let’s see mathematically –
Sidereal Day - 23 hour 56 minutes 4 seconds = 86164 seconds
Sidereal Days X Sidereal Year =
86164 X 366.25 = 31557565 seconds
Sidereal Seconds / Solar Year = 31557565 / 365.25 = 86400 seconds
Convert 86400 seconds in hours = 86400/3600 = 24 hours
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