Are the hours of days and nights r always equal?

Question

also y its 24 hr ?

Answer 1

The hours are definitely not always equal. If you're above the arctic circle, you have days with 24 hours of daylight in the summer and 24 hours of darkness in the winter.

To visualize why this is the case,
- Take a globe. Note that the axis of rotation is tilted about 23.5 degrees.
- Shine a lamp horizontally onto the globe, so that the northern axis is tilted towards the lamp.
- Spin the globe. Note that the north pole will be lit by the lamp at all times. Similarly, the south pole will be dark at all times.

When the northern axis is tilted towards the lamp, you have the northern hemisphere's summer.

To get to the northern hemisphere's winter, move the globe in a large circle around the lamp. When you've gone 180 degrees around the circle, the southern axis will be facing towards the lamp, and the northern axis will be facing away from it. This represents the southern summer and northern winter.

As for day lengths, they're always 24 hours, because that's the amount of time it takes the earth to rotate once around its axis.

(Actually the earth rotates once every 23 hours 56 minutes, and the remaining 4 minutes of a day come because the earth has moved 1/365th of the way along its orbit around the sun, but this technicality is perhaps best left for another lesson!)

Hope that helps clear things up for ya a bit.

Answer 2

Only at the equator. Everywhere else they are actually just equal two days out of the year: the spring and autumn equinoxes, which usually occur on about March 21 and September 21, respectively.

The days are longer in the Summer and the nights longer in Winter. The Summer solstice (around June 21) is the longest day of the year, and the Winter solstice (around December 21) is the longest night.

The solstices and equinoxes are the beginnings of each season.

The sum of day+night is always the same, though, at almost exactly 24 hours. The only reason it's 24 hours is because that's how long we chose hours to be. If people had made hours different length, then days would be a different number of hours. I think it was originally in Egypt where they decided to split up the day and night each into 12. Then it sort of became tradition.

Answer 3

hi,
look technically the days are longer in summer and shorter in winter so the hrs of the days and nights keep on fluctuating
and its not exactly 24hrs in a day. its a few Min's less and that is y every four yrs the month of Feb has 28 days in stead of 29 to balance the rotational flaw.
And the only reason it is 24hrs is because v calculate the time the earth takes to complete one rotation which is approximately 24hrs
i hope i have answered ure query .. if so do leave a feed back .. if not then there's always the Internet for more info..
take care and have fun ..

Answer 4

If u live in the equator, yes it is. If u live in the northern or southern part of the globe with 4 seasons they kind of equal too somehow.

Answer 5

hours for the day and night are not the same.......as u hav observed that days in winter are short and in summer the days are long........................
24hrs is the time taken for the earth to take one revolution and this is always constant.
hope u hav been served by this answer.

Answer 6

They are always everyday if you are in the equator. In other places aside from the equator it won't be everyday but always every year.