WOOOOOOOW!!!! has anyone looked at the moon tonight??
Why is there a big circle around it ????
2007-04-25 10:13:35 · 17 answers · asked by jojitsui 4 in Science & Mathematics ➔ Astronomy & Space
Ammo- I am in caerphilly, aint it pretty mad!!!
2007-04-25 10:22:45 · update #1
Hi i'm in Cardiff and i just noticed that while having a ciggie out the back - it is perfect in shape - really freaky - like a giant crop circle lol
EDIT: It sure is - I am 34 and have never seen it before - really strange
2007-04-25 10:20:12 · answer #1 · answered by Anonymous · 0⤊ 0⤋
It's caused by diffraction of light due to tiny particles of water, ice or even dust.
The equation d*theta=lambda gives the radius of the ring in radians, where lambda =wavelength and d=particle spacing (of the order of the particle size).
Look closely, the ist order ring actually contains all the colours of the spectrum in reverse order (blue inner, red outer). If the particles are exceptionally uniform, you may see 2 or more 'halos'
Count the 'moon diameters' inside the halo. One moon diameter corresponds to about 0.01 radians. If you use lambda=0.0000005m, this will give you the particle size/spacing. I would guess that water particles being more uniform in shape and size than ice particles would give some sort of indication of weather conditions in the troposphere from the regularity of the halo. ie regular=warm, moist and irregular=colder conditions.
2007-04-25 12:31:21 · answer #2 · answered by troothskr 4 · 0⤊ 0⤋
what you see is being caused by the dew, there is a lot of moisture around and the light from the moon is illumingating it causing a sort of "night rainbow". If you look attentively you will see the colors, somewhat faded, but there.
2007-04-25 10:20:39 · answer #3 · answered by Overgun 5 · 0⤊ 0⤋
It is caused by ice crystals in the upper atmosphere refracting moonlight. Folk lore says it means rain is on the way, since cirrus clouds, which are high, thing clouds make of ice crystals, frequently precede storms.
2007-04-25 10:19:40 · answer #4 · answered by campbelp2002 7 · 2⤊ 0⤋
I was playing with my Hula hoop the other day and some weird guy in a space suit stole it.I have no idea how to get it back though! Thanks for letting me know where it is I shall try and find a cheap flight with Branson to try and retreive it.
2007-04-25 10:27:03 · answer #5 · answered by caleyhighlander 2 · 1⤊ 0⤋
The presence of ice crystals in the upper atmosphere. This usually means that bad weather is on the way.
2007-04-25 10:22:09 · answer #6 · answered by Randy G 7 · 1⤊ 1⤋
It's probably only visible where you live. It's either moisture or ice crystals in the atmosphere doing that.
2007-04-25 10:18:37 · answer #7 · answered by Gene 7 · 0⤊ 0⤋
It means you're going to die. Pleasant dreams.
2015-01-01 12:06:55 · answer #8 · answered by kerry 2 · 0⤊ 0⤋
i think its caused by ice crystals in the air, beautiful is it not you are so lucky to see that.
2007-04-25 10:35:56 · answer #9 · answered by Anonymous · 0⤊ 0⤋
im sorry i can't see the moon tonight because its cloudy where i am.
2007-04-25 10:19:57 · answer #10 · answered by Dooby 6 · 0⤊ 0⤋