
Rainbows are fascinating. There is something simply magical, when you look up at the sky and sea their incredible colors. And although humans have marveled at them for thousands or even millions of years, it wasn’t until 1637 and the French scientist René Descartes that they were finally able to understand them. In his essay “Dioptrics” he was able to derive a law, describing refractions – the way light behaves when crossing the border between two different media, like for example water and air. Which is exactly what happens when rainbows are formed. The rays from the sun pass through tiny water droplets in the air and are reflected back from their rear surface. Whenever they pass between the two, they are refracted or bent slightly. However, the different wavelengths, or colors, that make up the light are bent by different portions. This causes the colors to spread into the beautiful fan that we are used to.
Because the light needs to be reflected back of the raindrops before it hits our eyes, it is only possible to see a rainbow with the sun standing behind us and due to the 42-degree angle, at which water refracts light, this is only possible if it is sitting low, close to the horizon. This is why we can only ever see a rainbow as a semi-circle. But if we could in some way be between the drops and the sun, while it is higher, like for example in an airplane, we would observe a complete circle.
A similar phenomenon is what is known as Halos. These are another type of circular rainbows, but they are formed by ice crystals in the atmosphere. For this to happen, a person would need to be either close to the poles, where it is colder, or again at a very high altitude. However, the ice refracts the light at a much smaller angle – 22 degrees, so full circles are actually observable from the surface.
Incredibly, throughout the years there has been much debate about how many colors actually make up a rainbow. According to the Greek poet Homer, there was only one color and that was purple. This claim was disputed by the philosopher Xenophanes, who declared there are two additional colors – red and greenish-yellow. During the Renaissance it was believed that the colors are actually four and it was Descartes himself, who added a fifth one, making them red, yellow, green, blue, and purple. Around 30 years later Sir Isaac Newton included indigo and orange and today these seven colors are perceived as the seven colors of the rainbow. However, as there is no hard boundary between them, it is very much up to interpretation.
I blog often and I really thank you for your content. This article has really peaked my interest.
I will book mark your site and keep checking for new details about once a week.
I subscribed to your RSS feed as well.
Aw, this was an exceptionally nice post. Finding the time
and actual effort to generate a very good article… but
what can I say… I procrastinate a whole lot and don’t seem to get nearly anything done.
I really like your blog.. very nice colors & theme.
Did you design this website yourself or did you hire someone to do
it for you? Plz answer back as I’m looking to create my own blog
and would like to find out where u got this from.
thanks a lot
Good replies in return of this query with solid arguments and describing the whole thing regarding that.
Fascinating blog! Is your theme custom made or did you download it from somewhere?
A design like yours with a few simple tweeks would really make my blog jump out.
Please let me know where you got your theme.
Many thanks
When I originally commented I clicked the “Notify me when new comments are added” checkbox
and now each time a comment is added I get three e-mails with the same comment.
Is there any way you can remove me from that service? Bless you!
This post is invaluable. Where can I find out more?
Like!! Really appreciate you sharing this blog post.Really thank you! Keep writing.
I really like and appreciate your blog post.
I learn something new and challenging on blogs I stumbleupon everyday.
I always spent my half an hour to read this web site’s articles or reviews daily along with a mug of coffee.
I love looking through a post that can make people think. Also, many thanks for permitting me to comment!
Hi there! Someone in my Myspace group shared this website with us so I
came to take a look. I’m definitely enjoying
the information. I’m book-marking and will be tweeting this to my followers!
Excellent blog and fantastic design and style.
Hello there! This is kind of off topic but I need some guidance
from an established blog. Is it hard to set up your own blog?
I’m not very techincal but I can figure things out pretty
fast. I’m thinking about creating my own but I’m not sure where to begin. Do you have any points or suggestions?
Appreciate it
It’s not my first time to visit this site, i am browsing this site dailly and
obtain pleasant facts from here all the time.
Hi there, after reading this remarkable article i am as
well delighted to share my familiarity here with colleagues.
Hey there! I could have sworn I’ve been to this site before but after reading through
some of the post I realized it’s new to me. Anyways, I’m definitely
happy I found it and I’ll be book-marking and checking back frequently!
adreamoftrains web hosting service
Thank you for the good writeup. It in reality used to
be a enjoyment account it. Glance complicated to more introduced agreeable from you!
By the way, how could we keep in touch?
Its like you read my mind! You seem to know a lot about
this, like you wrote the book in it or something. I think that you can do with some pics to drive the message
home a bit, but other than that, this is excellent blog.
A fantastic read. I’ll certainly be back.
Greetings! Very helpful advice within this post! It is the little
changes that make the greatest changes. Thanks a lot for sharing!
Thanks for finally writing about > Rainbows – Anna,
DoYouKnow < Loved it!
Genuinely when someone doesn’t understand after that its up to other viewers that they will assist,
so here it happens.
I’m not sure why but this website is loading extremely slow for me.
Is anyone else having this problem or is it a issue on my end?
I’ll check back later on and see if the problem still
exists.
I’m truly enjoying the design and layout of your
site. It’s a very easy on the eyes which makes it much more pleasant
for me to come here and visit more often. Did you hire out a designer to create your theme?
Excellent work!
Hello, I enjoy reading all of your article post.
I wanted to write a little comment to support you.
Attractive section of content. I just stumbled upon your weblog and in accession capital to assert that I acquire actually enjoyed account your blog
posts. Anyway I will be subscribing to your augment and even I achievement you access consistently rapidly.
It’s really a great and useful piece of information. I am
satisfied that you shared this helpful information with us.
Please keep us up to date like this. Thank you for sharing.
Pretty nice post. I simply stumbled upon your weblog and wanted to say that I’ve really enjoyed surfing around your weblog posts.
In any case I’ll be subscribing to your rss
feed and I’m hoping you write once more very soon!
Hi there! This blog post couldn’t be written much better! Reading
through this article reminds me of my previous roommate!
He constantly kept talking about this. I will forward this information to him.
Fairly certain he’ll have a great read. I appreciate you for sharing!
Hey there! Would you mind if I share your blog with my
twitter group? There’s a lot of people that I think would really enjoy your
content. Please let me know. Thank you
It’s in reality a great and useful piece of info. I am glad that you simply shared this useful information with us.
Please stay us up to date like this. Thank you
for sharing.
My developer is trying to persuade me to move
to .net from PHP. I have always disliked the idea because of the expenses.
But he’s tryiong none the less. I’ve been using Movable-type on a number of websites for about a year and am nervous about switching to another platform.
I have heard good things about blogengine.net. Is there a way
I can transfer all my wordpress posts into it? Any kind of help would be really appreciated!
Hello, after reading this amazing piece of writing i am as well happy
to share my knowledge here with friends.
Hi Dear, are you really visiting this website on a regular basis, if so after that
you will definitely get nice knowledge.
What’s up, all is going well here and ofcourse every one is sharing facts, that’s truly
good, keep up writing.
I visit every day some websites and sites to read articles or reviews, however this web site gives feature based writing.
We absolutely love your blog and find nearly
all of your post’s to be just what I’m looking for.
can you offer guest writers to write content for you personally?
I wouldn’t mind publishing a post or elaborating on a number of the subjects you
write regarding here. Again, awesome weblog!
A person essentially assist to make severely posts I would state.
That is the first time I frequented your website page and thus far?
I surprised with the research you made to create this actual publish extraordinary.
Magnificent task!
Hi would you mind letting me know which webhost you’re working with?
I’ve loaded your blog in 3 completely different browsers and
I must say this blog loads a lot quicker then most.
Can you recommend a good hosting provider at a honest price?
Kudos, I appreciate it!
Hey very interesting blog!
What’s Going down i am new to this, I stumbled upon this I have found It positively useful and it has
helped me out loads. I’m hoping to contribute & assist different users like
its helped me. Great job.
Very nice post. I just stumbled upon your weblog and wanted to say that
I have really enjoyed surfing around your blog posts.
After all I will be subscribing to your rss feed and I hope you write again soon!
Great post. I used to be checking continuously this weblog and I am inspired!
Extremely useful information specially the closing phase 🙂 I take care of such info a lot.
I was looking for this particular information for a long time.
Thank you and good luck.
Hello my friend! I wish to say that this article is
awesome, great written and come with almost all vital infos.
I’d like to peer extra posts like this .
I truly love your site.. Great colors & theme.
Did you build this site yourself? Please reply back
as I’m attempting to create my own personal blog and would love to find out where you got this from or what the theme is called.
Cheers!
I’m amazed, I have to admit. Rarely do I encounter a blog that’s equally educative and entertaining,
and without a doubt, you have hit the nail on the head.
The issue is something which not enough people are speaking intelligently about.
I am very happy that I came across this in my search for something relating to
this.
Hello there! This article couldn’t be written any better!
Looking through this post reminds me of my previous roommate!
He continually kept preaching about this. I will forward this information to him.
Pretty sure he’s going to have a good read. Thank you for sharing!
We absolutely love your blog and find almost all of
your post’s to be exactly what I’m looking for. Would you offer guest writers to write content in your case?
I wouldn’t mind writing a post or elaborating on many of
the subjects you write regarding here. Again, awesome site!
Hello i am kavin, its my first occasion to commenting anyplace,
when i read this post i thought i could also make comment
due to this brilliant paragraph.
Way cool! Some extremely valid points! I appreciate you penning this
write-up plus the rest of the site is also very good.
Hey! I could have sworn I’ve been to this website
before but after browsing through some of the post I realized it’s new to me.
Anyhow, I’m definitely happy I found it and I’ll be
bookmarking and checking back often!
Hi! I know this is kind of off topic but I was wondering if you knew where I could locate a captcha plugin for my comment form?
I’m using the same blog platform as yours and
I’m having difficulty finding one? Thanks a lot!
May I just say what a relief to discover somebody that genuinely understands what they’re discussing on the internet.
You actually understand how to bring an issue to light
and make it important. More and more people must read this and
understand this side of your story. I was surprised you’re not more popular because you most certainly possess the gift.
Why viewers still use to read news papers when in this technological globe all
is existing on net?
Pretty! This was an incredibly wonderful post.
Many thanks for supplying this info.
Greetings! Very helpful advice within this post! It’s
the little changes which will make the largest changes.
Thanks for sharing!
Wow, awesome blog layout! How long have you ever been blogging for?
you make blogging glance easy. The full look of your site is
fantastic, let alone the content!
What i don’t understood is in fact how you are now not
really much more smartly-preferred than you may be now.
You are very intelligent. You understand therefore considerably on the subject of this subject,
produced me in my view imagine it from a lot of varied
angles. Its like women and men are not fascinated until it is
something to do with Woman gaga! Your personal stuffs great.
Always deal with it up!
I needed to thank you for this wonderful read!! I absolutely enjoyed every little bit of it.
I have you book-marked to check out new things you post…
Please let me know if you’re looking for a writer
for your weblog. You have some really great posts and
I think I would be a good asset. If you ever want to take some of the load off, I’d absolutely love to write some material
for your blog in exchange for a link back to
mine. Please blast me an e-mail if interested. Thank you!
I’m not that much of a online reader to be
honest but your blogs really nice, keep it up! I’ll go ahead and bookmark your
website to come back later on. Cheers
I’m really impressed with your writing skills as well as with the layout on your weblog.
Is this a paid theme or did you customize it yourself?
Anyway keep up the excellent quality writing, it is rare to see
a great blog like this one nowadays.
Just desire to say your article is as astonishing.
The clearness on your post is simply great and that i can assume you are knowledgeable in this
subject. Fine along with your permission allow me to clutch your RSS feed to stay updated with impending post.
Thanks 1,000,000 and please keep up the gratifying work.
Way cool! Some very valid points! I appreciate you
writing this post and also the rest of the website is very
good.
Ahaa, its fastidious discussion regarding this paragraph here
at this blog, I have read all that, so now me also commenting here.
Incredible points. Great arguments. Keep up the good spirit.
Good day! I know this is kinda off topic but I was wondering which blog platform are you
using for this site? I’m getting tired of WordPress because I’ve
had problems with hackers and I’m looking at alternatives for another platform.
I would be fantastic if you could point me in the direction of a good platform.
If some one wants to be updated with hottest technologies afterward
he must be visit this web site and be up to date all the time.
This design is incredible! You certainly know
how to keep a reader entertained. Between your wit and your videos, I
was almost moved to start my own blog (well, almost…HaHa!) Great job.
I really loved what you had to say, and more than that, how you presented it.
Too cool!
Heya i am for the first time here. I came across this board and I in finding It truly helpful & it helped me out much.
I hope to provide one thing back and aid others like
you aided me.
bookmarked!!, I love your web site!
I read this paragraph completely concerning the resemblance
of most up-to-date and earlier technologies, it’s remarkable article.
Do you have a spam issue on this site; I also am a blogger, and I was wanting to
know your situation; many of us have developed some nice practices and we are
looking to trade methods with other folks, why not shoot me an e-mail
if interested.
We stumbled over here different web page and thought I might as well check
things out. I like what I see so now i am following
you. Look forward to looking into your web page repeatedly.
Thanks very interesting blog!
Hi there! I just wanted to ask if you ever have any trouble with hackers?
My last blog (wordpress) was hacked and I ended up losing months of hard work due to no
backup. Do you have any solutions to stop hackers?
I’m not that much of a online reader to be honest but your sites really nice, keep it up!
I’ll go ahead and bookmark your website to come back later.
Many thanks
My brother recommended I might like this blog. He was totally right.
This post actually made my day. You cann’t imagine just how much time
I had spent for this info! Thanks!
Thank you for the good writeup. It in fact was
a amusement account it. Look advanced to more added agreeable from you!
By the way, how can we communicate?
Thanks very interesting blog!
I just like the valuable information you supply for your articles.
I will bookmark your weblog and check again here frequently.
I am somewhat certain I will be informed plenty of new stuff proper right here!
Good luck for the next!
I visit each day some web pages and information sites to
read content, however this web site presents feature based content.
Hi! This is my 1st comment here so I just wanted to give a quick shout out
and say I genuinely enjoy reading through your posts.
Can you suggest any other blogs/websites/forums that cover the
same subjects? Thanks!
Great article, just what I wanted to find.
Excellent blog! Do you have any helpful hints for aspiring writers?
I’m planning to start my own blog soon but I’m a little lost on everything.
Would you advise starting with a free platform like WordPress or go for a paid option? There are so many options out there that I’m completely overwhelmed ..
Any suggestions? Thanks a lot!
Hi there mates, how is the whole thing, and what you desire to say about this paragraph, in my view its truly awesome in support of me.
Wow, marvelous blog layout! How long have you been blogging for?
you made blogging look easy. The overall look of your web
site is wonderful, let alone the content!
Pretty nice post. I just stumbled upon your weblog and wished to mention that I’ve truly loved browsing your blog
posts. In any case I’ll be subscribing on your rss feed and I hope you write
again soon!
Great beat ! I would like to apprentice while you amend your website, how can i subscribe for a weblog site?
The account helped me a acceptable deal. I had been tiny bit familiar of this your broadcast offered vivid clear concept
Unquestionably believe that which you stated. Your favorite justification seemed
to be on the net the easiest thing to be aware of.
I say to you, I certainly get irked while people think about worries that they just don’t
know about. You managed to hit the nail upon the top as well as
defined out the whole thing without having side effect , people could
take a signal. Will likely be back to get more. Thanks
I am regular reader, how are you everybody?
This article posted at this website is really nice.
I think the admin of this web page is really working hard for his web page, as here every stuff is quality
based data.
I know this if off topic but I’m looking into starting my own blog and was wondering what
all is needed to get setup? I’m assuming having a blog
like yours would cost a pretty penny? I’m not very
internet savvy so I’m not 100% positive. Any suggestions or advice would be greatly appreciated.
Appreciate it
Undeniably believe that which you stated. Your favorite reason seemed to be on the net the easiest thing to be aware of.
I say to you, I definitely get irked while people consider worries that they
plainly do not know about. You managed to hit the nail upon the top and defined
out the whole thing without having side effect , people could
take a signal. Will probably be back to get more.
Thanks
I have read so many content concerning the blogger
lovers however this paragraph is genuinely a nice piece of writing,
keep it up.
What’s Taking place i’m new to this, I stumbled
upon this I’ve discovered It absolutely helpful and it has helped me out loads.
I am hoping to give a contribution & assist different
customers like its aided me. Great job.
whoah this blog is excellent i like studying your posts.
Keep up the good work! You realize, a lot of people are
looking round for this information, you could
help them greatly.
Hi there to every one, it’s genuinely a nice for me to go to see this website,
it includes precious Information.
With havin so much written content do you ever run into any problems of plagorism or copyright
infringement? My blog has a lot of exclusive content I’ve either created myself or outsourced but it looks like a lot of it is popping it up all over the
internet without my permission. Do you know any techniques to help reduce content from being ripped off?
I’d really appreciate it.
Hello friends, fastidious post and nice arguments commented at this place, I am actually enjoying by these.
Fantastic goods from you, man. I have keep in mind your stuff prior to
and you are simply extremely fantastic. I actually like what you’ve got here,
certainly like what you are stating and the way wherein you say it.
You’re making it enjoyable and you still take care of to keep it smart.
I cant wait to read much more from you. That is really a great web site.
I wanted to thank you for this great read!! I absolutely enjoyed every little bit of it.
I have you saved as a favorite to look at new stuff you post…
Hi there, i read your blog from time to time and i own a similar one and i was just wondering if you get a lot
of spam feedback? If so how do you prevent it, any plugin or anything you can recommend?
I get so much lately it’s driving me mad so any
help is very much appreciated.
Hi, its nice paragraph regarding media print, we all be
aware of media is a impressive source of data.
This is my first time pay a quick visit at here and i am in fact pleassant to read all at alone place.
You really make it seem so easy with your presentation but I find
this matter to be actually something that I think I would never
understand. It seems too complex and extremely broad for me.
I am looking forward for your next post, I will try to get the hang of it!
This web site truly has all of the information and facts I
needed concerning this subject and didn’t know who to ask.
It’s awesome to go to see this web site and reading the views of all colleagues on the topic of
this article, while I am also keen of getting experience.
I have to thank you for the efforts you’ve put in writing this website.
I am hoping to check out the same high-grade
content from you in the future as well. In truth, your creative writing
abilities has inspired me to get my very own blog now 😉
Also visit my web blog: http://www.Electronoobs.com
Great article! We will be linking to this particularly great post
on our site. Keep up the good writing.
I don’t know if it’s just me or if everyone else experiencing problems with your site.
It appears as though some of the written text on your posts are running off the screen. Can someone else please provide feedback and let me
know if this is happening to them too? This may be a problem with my internet
browser because I’ve had this happen before.
Cheers
Greetings I am so glad I found your website, I really found you by
error, while I was searching on Aol for something else, Anyways
I am here now and would just like to say thanks for
a remarkable post and a all round entertaining
blog (I also love the theme/design), I don’t have time to read through it all
at the moment but I have bookmarked it and also included
your RSS feeds, so when I have time I will be back to read much more, Please
do keep up the fantastic b.
Hi there mates, fastidious piece of writing and
nice arguments commented at this place, I am actually
enjoying by these.
I know this if off topic but I’m looking into starting my
own weblog and was wondering what all is required to get
set up? I’m assuming having a blog like yours would
cost a pretty penny? I’m not very web savvy so I’m not 100% sure.
Any recommendations or advice would be greatly appreciated.
Thank you
my blog; palmbomen Te koop
Heya i’m for the first time here. I came across this board and I find
It truly useful & it helped me out much. I hope to give something back and help others like you aided me.
Do you have a spam issue on this site; I also am a
blogger, and I was wondering your situation; we have
developed some nice methods and we are looking to swap solutions with others, be sure
to shoot me an email if interested.
Greetings from Ohio! I’m bored to tears at work so I decided to browse your site
on my iphone during lunch break. I love the info you provide
here and can’t wait to take a look when I get home.
I’m shocked at how fast your blog loaded on my mobile ..
I’m not even using WIFI, just 3G .. Anyways, awesome site!
hi!,I really like your writing very a lot! share we keep
in touch more about your post on AOL? I require an expert in this space to resolve my problem.
Maybe that’s you! Having a look ahead to look you.
Feel free to surf to my webpage … Winterharde palmbomen
Thank you for the good writeup. It in fact was a amusement account it.
Look advanced to more added agreeable from you!
However, how could we communicate?
I am in fact happy to glance at this webpage posts which consists of lots of
useful facts, thanks for providing these information.
Good day! I simply would like to offer you a big thumbs up for the excellent info you
have got right here on this post. I will be coming back to your site for more soon.
This is very interesting, You’re a very skilled blogger.
I’ve joined your feed and look forward to seeking more of your magnificent post.
Also, I’ve shared your web site in my social networks!
My brother suggested I might like this blog. He was totally right.
This post truly made my day. You can not imagine simply
how much time I had spent for this info! Thanks!
Here is my web blog klik hier
My spouse and I stumbled over here by a different web
address and thought I may as well check things out.
I like what I see so now i am following you. Look forward to looking at your web page repeatedly.
my web site; adenium
Hello there! Would you mind if I share your blog with my myspace group?
There’s a lot of people that I think would really appreciate your content.
Please let me know. Thank you
I like reading through an article that will make men and women think.
Also, thank you for allowing me to comment!
Feel free to visit my homepage; canada online pharmacy
velocemente 10 kg in una settimana
Appreciation to my dad who informed me about this website,
this blog is really awesome.
My blog :: CarolTJuluke
canadian pharmacy discount pharmacy online canadian pharmacy review
buy prescription drugs canada Cialis Super Active bestsellers
drugs online men’s health Viagra Soft Tabs
My brother suggested I might like this website. He was totally right. This post actually made my day. You cann’t imagine simply how much time I had spent for this info! Thanks!
instant 24/7 payday loans how to start a payday loan business in australia cash advance brickell
You actually ensure it is seem really easy together with your presentation but I in locating this
matter to get actually a very important factor which I believe I’d never understand.
It sort of feels too complex and extremely vast for me. I am just using a look ahead for the
subsequent submit, I’ll make an effort to get
the dangle from it!
My web page :: EloisZLahren
cheap viagra viagra with prescription online generis viagra
cialis boots price cost of cialis in thailand cialis und schmerzmittel
cialis diario lilly presentaciones cialis mexico 26 years old cialis
Hey there! Would you mind if I share your blog with my zynga group?
There’s a lot of folks that I think would really enjoy your content.
Please let me know. Many thanks
It’s a shame you don’t have a donate button! I’d certainly donate to this superb blog!
I guess for now i’ll settle for book-marking and adding your RSS feed to my Google
account. I look forward to fresh updates and will share
this site with my Facebook group. Talk soon!
Excellent web site you have here.. It’s difficult
to find good quality writing like yours nowadays.
I really appreciate people like you! Take care!!
Does your site have a contact page? I’m having a tough time locating it but, I’d like to send you an e-mail.
I’ve got some recommendations for your blog you might be interested in hearing.
Either way, great blog and I look forward to seeing it grow over
time.
hey there and thank you for your information – I’ve certainly
picked up something new from right here. I did however expertise some technical issues using this website,
as I experienced to reload the web site lots of
times previous to I could get it to load correctly.
I had been wondering if your hosting is OK? Not that I am complaining, but sluggish loading instances times will sometimes affect your placement
in google and could damage your quality score if ads and marketing with Adwords.
Well I’m adding this RSS to my email and can look out for much
more of your respective interesting content. Ensure that you update this again very soon.
generic viagra online viagra commercial girl how much icariin equals viagra
cialis without perscriptions viagra cialis canada how to buy cialis online