English Deutsch Français Italiano Español Português 繁體中文 Bahasa Indonesia Tiếng Việt ภาษาไทย
All categories

than at any point of the earth day and night occurs at the same time, or could we say if we step left one step than it is day and night on the right step?

2006-12-13 22:32:11 · 8 answers · asked by amit dalmia 1 in Science & Mathematics Physics

8 answers

:))....
if perhaps earth was such a small sphere!... then, your imagination would have been a true occurance.
There are quite a few guarding factors while the transition occurs between day to night and vice versa!

1. Day and nights occur when the earth rotates on it's axis. As we all know, it takes 24 hrs for the earth to complete 1 full rotation around it's own axis.

2. The earth is a huge mass. And the incident Sun rays are the "lightening medium" on the earth's surface. When the part of the globe in which we live faces the sun, we experience day. When we are on the shady/ opposite side, we are in 'dark' which is termed as night.

3. The earth is positioned at an 'incident' angle (23.5 Deg) to the sun with it's axis of revolution. Also, earth revolves with a 'certain' speed which will 'expose' the progressive part of the sphere to the Sun's light and 'encloses' the opposite part into shade.

4. So, while revolution of the earth the sunlight first falls on the 'horizon' and sometime later we will see the sun. The same thing happens in the reverse order while the Sun 'sets' (i.e. sun sets first and sunlight gradually disappears later!!). Between sunrise and sunset, the sun appers to travel from one end to another which will effect in the gradual increase and then a decrease in sun-light.

5. That mean's in effect, we are 'bound' to experience the "transition" periods between day & Night and vice versa.

So to practically experience day/ night by just a 'change' of step from one side to other of the boundary will require you to be huge enough to negate the effect of the horizon. :))
Moreover...., you will loose the joy of the blissful 'dawns' and the enchanting 'dusks' by skipping across.. :))

2006-12-13 23:26:01 · answer #1 · answered by Vinay V 2 · 0 0

No, because the light rays declines gradually.as we can see the change of lights from 4 p.m to 6 p.m in evening or 5a.m to 6a.min the morning like this only the light rays becomes less dim and it gradually becomes night.there is not any point on the earth where day and night occurs at the same time, or could you step left one step than it is day and night on the right step

2006-12-14 07:16:02 · answer #2 · answered by abhishek j 1 · 0 0

The earth is a "ball" - it curves. If day and night is not by the clock but by the light, then day turns to night gradually and not light one moment and dark the next. Prove of this is at the north or south pole. There are certain times where it is day 24 hours and night 24 hours.

2006-12-14 06:43:08 · answer #3 · answered by Tom Cat 4 · 0 0

The concept of Day and Night is a convienent definition for the two extremes experienced on Earth on a daily, rotational basis. It holds no more definitive value than the precise time you may begin using "Good Evening" over "Good Afternoon".

At the precise time of sunset, which is an exact moment depending on your location on the Earth, the recognized cycle of "night" begins for most people that live within the bounds of 55 degrees North and 35 degrees South latitude. Passing through dusk into dark. The same occurs in the case of sunrise. Note that the timing of this occurence can be drastically different from 55 degrees as compared to an on-Earth position of 10 degrees.

Costa Rica for example, will have 11.5 hours of "Day" today at 10 degrees latitude with sunrise at 5:45am and sunset at 5:18pm. In Anchorage, Alaska, however, has only about 5.5 hours of "Day" today with Sunrise/Sunset at 10:08am and 3:42pm.

This "Daytime" as it is using your analogy that stepping one step west at sunset can extend your "Day" is a matter of opinion and context based on where you're located when you observe this and what time of year it is. Day and night are loosely used terms to diffrentiate between the dark and light portions of the day by reading your question.

In Barrow, Alaska on the summer solstice around June 21st they have 24 hours of daylight as the sun rolls 360 degrees about the horizon. This coming week with the winter solstice, they will have nearly 24 hours of darkness. During the spring and fall equinoxes they get 12 hours of each like most of us are more accoustomed to.

You'll be fascinated to know that no matter what time of year it is in Barrow, Alaska.... They still refer to "Day" and "Night" just as the rest of the world and it occurs during the same relative timeframes according to your AM and PM clock as it does on theirs.

2006-12-14 10:46:55 · answer #4 · answered by davesteph06 1 · 0 0

If we supposed that there is a real line that separates night and day, the point will be on the two poles and exactly on March 21 and September 21, imagine that and think about it.

2006-12-14 08:10:45 · answer #5 · answered by sinan salameh 1 · 0 0

Well, yes, but it's not like you're in complete darkness one minute and light the next (or from your one step left or right). That's why we say there is Dawn and Dusk too.

2006-12-14 06:34:46 · answer #6 · answered by Robin the Electrocuted 5 · 1 0

usually they call that time of day dusk..that is when day and night occur at an intersection.

2006-12-14 06:40:59 · answer #7 · answered by koalatcomics 7 · 0 0

Might as well say ...
I give up. I cannot communicate in English.

2006-12-14 06:38:21 · answer #8 · answered by Minmi 6 · 0 0

fedest.com, questions and answers