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A real rainbow is associated with water droplets at high altitude - how high is your ceiling? Does it often rain in your living room?Of course, simply splitting white light into its constituent colours is part of high school physics - using glass prisms - but these are not 'real rainbows'.As for rainbows at night - clearly, rainbows must have light, although it might be that around dawn or dusk you could still get light at high altitude but very reduced light at ground level. Then again, are you sure the picture was taken at night, or was it merely stopped down to expose for a bright sky, causing the ground level to be underexposed?
Yes and yes.lets start with the second question. Moonbows are real and although i have never seen one myself, the pictures still look good.Moonbows are made the same way as regular rainbows, When the moonlight strikes drops of falling rain in the sky opposite the moon, they are reflected and refracted within the raindrop, making your moonbow.When you look at at moonbow, it is almost without any colour. This is because of the low light levels, but if you were to take a picture of a moonbow, it would show up with all of the colours of a ...rainbow.The best places to see moonbows are in location where they have waterfalls, and Little street or urban lighting.As for the first question, can you make a rainbow at home? i hope you don't mean you need to remove the roof and get the garden hose in your living room!I did post an experiment where you can make rainbows with the hosepipe in the garden, i will post another one that you can do inside.
Just for you, Neil.http://www.thenakedscientists.com/forum/index.php?topic=6730.new#newyou could try it at night, the next time we have a full moon and see if you get a moonbow.
...moonbow...what would cause it to not show aqs colors. but photographing it will???