why is it some days the sky seems to be a dark blue and other days a light blue
202880
without molecules in the air around us, we actually sees the whole visible light spectrum (from Sun) i.e. the white light(combination of blue, red, green, violet.....). But in real life, we were surrounded by atmosphere rich of different kinds of molecules. These molecules scatter the whole visible light spectrum from the Sun except blue light spectrum. Thus we see the sky blue during the day.
64002
Because it has been darkest for longest at this time. Why is the high at around 6:00 pm? same reason. The sun has been at its peak for longest then.
556946
between 10am -2pm the sun is high in the sky. with a high hummity it is posible to see a rainbow all the way  around the sun
15605
The blue color of the sky is due to Rayleigh scattering. As light moves through the atmosphere, most of the longer wavelengths pass straight through. Little of the red, orange and yellow light is affected by the air. \n\nHowever, much of the shorter wavelength light is absorbed by the gas molecules. The absorbed blue light is then radiated in different directions. It gets scattered all around the sky. Whichever direction you look, some of this scattered blue light reaches you. Since you see the blue light from everywhere overhead, the sky looks blue.\n \nAs you look closer to the horizon, the sky appears much paler in color. To reach you, the scattered blue light must pass through more air. Some of it gets scattered away again in other directions. Less blue light reaches your eyes. The color of the sky near the horizon appears paler or white.
70170
Extremly pale misty blue and you can see the moon which appears stark white right now-\nI wish it was a golden orange sky like right when the sun goes down thats my favorite I wish it could stay dusk for atleast 5 hours or so that would be so COOL
260627
The sky is (roughly) that part of the atmosphere or of outer space visible from the surface of the earth (or any other planet; see Skies of other planets). Birds, airplanes, and kites are often considered to fly in the sky. It is difficult to define precisely for several reasons. During daylight the sky has the appearance of an opaque blue surface, but this is the result of the air scattering sunlight. [1]There is no "blue object" above the earth in any normal sense, so it is hard to say what object the sky is. The sky is thus sometimes defined as the denser gaseous zone of a planet's atmosphere. At night the sky has the appearance of a black surface or region scattered with stars. But if we then say that the sky is the entire visible universe, it would not be the same thing we see during the day. The color of the sky is a result of diffuse sky radiation. On a sunny day the Earth sky usually looks as a blue gradient — dark in the zenith, light near the horizon (due to Rayleigh scattering). It turns orange and red during sunrise and sunset, and becomes black at night.\n\nDuring the day the Sun can be seen in the sky, unless covered by clouds. In the night sky (and to some extent during the day) the Moon, planets and stars are visible in the sky. Some of the natural phenomena seen in the sky are clouds, rainbows, and aurorae. Lightning can also be seen in the sky during storms. As a result of human activities, smog during the day and light radiance during the night are often seen above large cities (see also light pollution).\n\nIn the field of astronomy, the sky is also called the celestial sphere. This is an imaginary dome where the sun, stars, planets, and the moon are seen to be travelling. The celestial sphere is divided into regions called constellations.\n\n\nSky in religion\nMany cultures ascribed strong religious qualities to Earth's sky, believing it to be the home of the heavens and various deities. Among the Chinese, in certain situations, sky means god. For example, people may say "They became friends after several fights: this is the idea of the sky" or "Why does the sky always fool me?" Some religion and art historians believe that in Christianity, in particular, the connection between heaven and sky arose because of a medieval painting technique, where different places were drawn separately on the same picture. Heaven, a different and more important world, was usually painted above the earthly world and was separated from it by clouds.\n\n\nExpressions\nA pie in the sky is something that is wanted very badly but is unobtainable. \nWhen someone's assumptions or premises concerning a particular subject seem to be radically different from everything you know and recognize about the world, you wonder what color the sky is in their world. \nSimilarly, because the blue hue of the sky during daytime is such a universally observed and understood phenomenon, people say "as sure as the sky is blue" to mean that something is an indisputable fact. \nBlue skies are evoked as a symbol for good times, optimism and emotional peace. \nTo be sky-clad means to be in the nude. \nSimilarly, to go skying is a euphemism for stripping or streaking. \nTo show that there are no limits on what we can discover or accomplish, you can say, "The sky's the limit!" \n"Blue sky thinking" means coming up with a host of ideas without being restricted to what is practical (similar to brainstorming); in particular, an optimistic assumption is made that there will be no obstacles or opposition to implementation of the ideas. \n"The sky is falling" is a common expression that is used when any sort of disaster is occurring. This came from the fable Chicken Little
385465
Yes, I have noticed the same thing.  It tends to get cold in the winter and hot in the summer, with spring and fall being cooler than summer and warmer than winter.  At night it tends to get dark and in the day it is light, except in winter there is less dark and in the summer there is more light.  \n\nI have learned this based on years of careful observation at various times of the year.\n\nToday I also learned to tie my own shoelaces.
449620
Yes! Of course here in the UK it is not always 'blue' below the clouds! \n\nThe reason for the sky being blue is that as light moves through the atmosphere, most of the longer wavelengths pass straight through. Little of the red, orange and yellow light is affected by the air. \n\nHowever, much of the shorter wavelength light is absorbed by the gas molecules. The absorbed blue light is then radiated in different directions. It gets scattered all around the sky. Whichever direction you look, some of this scattered blue light reaches you. Since you see the blue light from everywhere overhead, the sky looks blue. \n\nTo get a fuller explanation (if you can bear it!) see the link below.\n\nGood question!\n\nx
3678
It is called Rayleigh Scattering, or Molecular scattering.  This is primarily caused by oxygen and nitrogen molecules, whose effective diameters are at least 0.1 times smaller than the effected wavelengths.  Rayleigh scattering is most influential at the alitudes above 4.5 km, occuring in what is called the pure atmosphere.  The amount of Rayleigh scattering is highly selective, being inversely proportional to the fourth power of wavelength.  Consequently, invisible ultraviolet radiation, at a wavelength of 0.3 micrometers, is scattered 16 times as readily as red wavelengths at 0.6 micrometers.  In the visible spectrum, blue wavelengths at 0.4 micrometers are scattered about five times as readily as red wavelengths at 0.6 micrometers.  The preferential scattering of blue wavelengths explains why the clear sky appears blue in daylight.  The blue wavelengths reach our eyes from all parts of the sky.
2614
Well mostly the difference in colour of the oceans is due to the muddy and unclear waters. no waters have colour. But it is just the colour of reflection. Please see the site i am listing below. It is a q & a type forum only!!\n\n\nYou may get your answer here too!!\n\nWe see the water  great masses, seas, lakes, rivers, with colors: blue,  green, gray, \nsometimes brownish. But if one picks up a pot of that water the aspect is not colored.  \nSo the color is an optical phenomenon that is observed only when a large volume of water \nis considered and it depends on several things:\n-The water reflects the sky, so its color depends upon the sky colour at that time, and if \nit has white or grayish clouds.\n-At other hand  the water colour depends also from the material that is found  mostly into \nthe sea  water.\nThere are life there…animal and vegetal, a lot,included the  phytoplankton, microscopic \nplants that either float or are suspended there.  And of course there are  dissolved and \nsuspended also inorganic and organic matter coming from the sea floor and from rocks.   \nColor is the result of  optical interactions from the incident  solar light and the \nbillions of microscopic particles present.\nWhen the light of the sun reaches the sea surface different phenomena happen, part is \nreflected, part is absorbed and some is scattered. These phenomena happens with the water \nitself, the dissolved organic and inorganic matter and the suspended particles.\nThe colour of sea water depends upon  the distribution of these facts. It is blue for clear \nocean water and shifts to darker for less transparent or more turbid waters, and depends \nalso from the depth and transparency of the considered layer of water. And that colour can \nbe seen from space! That is why our planet Earth is called the "blue planet". Isn´t that \nwonderful?\nAnd thanks for asking NEWTON!
95744
Because the air particles reflects different colors from light. The blue color wavelengths are so long that we see them without seeing the other colors.\n\nAt least that's what I remember, I think.\n\nAnd the sea looks blue because of the reflection from the sky. If you run your sink, the water is not blue. D:
15634
next to why is the sky blue, this has gotta be the second most frequently-asked question.  congratulations on making such an innovative and creative joke!\n\nthis page should help you out:\nhttp://www.style.org/unladenswallow/
397831
This theory sounds like a bunch of balogna (pronounced baloney). The reason that there is day and night is that a giant dragon eats the sun at night. And in the morning, it lays a new sun.\nBut seriously, day and night occur because the earth spins on its east-west axis. On some other planet (Neptune, I think) the sun rises and sets on its north-south axis.
46350
One meaning to this is that you did not check the archive of previously asked questions before you posted your question about the sky's color. This has been asked and answered almost 400 times so far here (see link below). \n\nHowever, the reason the sky appears blue (at least most of the daylight hours) is that the atmosphere is mostly oxygen and nitrogen, which are just the right size molecules to scatter the blue light, but let the other colors pass unimpeded. \n\nSo when you take the blue away from the mostly white sunlight, you get sorta yellow sunlight. \n\nAs the sun sets, the sunlight passes through more air, and more blue is scattered away, leaving the sunlight even less blue, that is, more orange. \n\nAs the sun sets even farther, even more blue is scattered away, and the sunlight appears red.
422189
They appear dark because they are very thick clouds and obscure sunlight from getting through. If viewed from above, they appear pure white.
324003
When im happy....my sky is a sunset. When im sad its grey and full of dark thunder clouds waiting to rain. When im random...its purple with a slight tint of green and fuschia. \n\nmy skys never just blue. im an original. :)
303723
When it is dark, your brain and body think it is night time. If it gets all datk and rainy in the day, your body doesn't understand because it associates dark with sleep. Also, I think the sound of thunder and rain hitting the windows is really relaxing. And there is the thing about the sun. Some people have that Seasonal Affective Disorder thingymejig which makes them depressed in the winter because sunshine makes you happy.