Cazibə qüvvəsi və Təkamül Üzərindəki Təsiri

96

Planetimiz var olduğundan bəri, Kainatın başlanğıcında meydana gələn partlayışın tipindən qaynaqlanan qanunlardan biri olan cazibə istisnasız hər cismə təsir etməkdədir. Bu, 4.5 milyard il əvvəl başlamış və indiki vaxtda qədər hələ də davam etməkdədir. Planetimiz yox olana qədər də davam edəcək.

Bu cazibə təsiri altında bir çox hadisə meydana gəlməkdədir. Məsələn cazibənin planetimiz üçün olan versiyası, atmosferinin kosmosa dağılmasının qarşısını almağıyla yanaşı, eyni zamanda bütün atmosfer molekullarının yer üzünə çökməsinə yetmeyecek qədər zəif olmasıdır. Bu xüsusiyyəti milyonlarla planetdə görmək mümkündür, ancaq əlimizdəki yer planeti olduğu üçün bu xüsusiyyət bizə “qiymətli” görünməkdədir.

Eyni şəkildə, atmosferin bu vəziyyəti və Dünyanın Günəşə olan uzaqlığı, planetin istiliyinin müəyyən bir aralıqda var olmasına səbəb olmuşdur. Hər nə qədər bundan 4,2 milyard il əvvələ qədər planetimiz nəhəng qırmızı bir gəzəgən də (super vulkanlardan ötəri hər yer lavlarla örtülmüşdü), vulkanların yaratdığı qazların yaratdığı istixana təsirindən ötəri planet əvvəl həddindən artıq istiləşməyə, sonra da yağışların başlamasıyla soyumağa başladı. Bunların hamısını cazibə qüvvəsinə borcluyuq. Amma unutmayın, bir çox planetdə, bənzər hadisələr görülməkdədir.

Bax bu şərtlər altında, yenə cazibənin təsiriylə birlikdə, yağışlar planet üzərində nəhəng okeanların meydana gəlməsinə səbəb olmuş, torpaq quruların hamısı sular altında qalmışdır. Bu nöqtədə suyun dibində hələ də super vulkanların artıq yox olmağa yaxın nəfəslərinin çıxdığı dəniz bacaları adlı nöqtələrdə istilik, bəzi kimyəvi reaksiyaların gerçəkləşə bilməsini sürətləndirəcək səviyyədədir. Miller-Urey təcrübəsi canlılığın atmosferdə, yəni qazlar arasında reallaşdığını hesab etmişdir; ancaq indiki vaxtda təcrübə 460’a qədər universitet də fərqli şərtlərdə təkrar edilmiş və dəniz bacalarının təmin etdiyi şərtlər altında canlıların ən asan var ola biləcəyi kəşfi edilmişdir.

Nəticə olaraq canlılıq, dənizlərin dibində başlamış və ən başından bəri olduğu kimi, canlılığın başlanğıcı və təkamülü müddətində də hər zaman cazibə orada tapılmış və təsirini göstərmişdir. Bu səbəbdən hələ ilk canlıdan bəri, hər bir molekul, hər bir quruluş, hər bir orqanoid hər bir orqan, cazibənin hər hansı bir təsirinə görə təkamülləşmişdir. Bax spesifik cavab verməyimizin səbəbi budur. O qədər uzun bir müddət, o qədər çox canlı növü o qədər fərqli şəkillərdə təkamülləşmişdir ki, hansı nöqtədə, hansı quruluşun, hansı səbəblərlə cazibədən təsirləndiyini tapmaq çətindir. Ancaq yenə də əlimizdə bəzi məlumatlar var.

 

Məsələn embrioloji dövrdə hüceyrələrin “qədəri” dediyimiz hansı strukturlara dönəcəyinin təyini cazibənin istiqamətinə görə müəyyənləşdirilir.

 

Qısaca molekulların cazibə təsiri altında müəyyən bölgələrə dağılaraq hüceyrələrin hansılarının ön (anterior), hansılarının arxa (posterior), vs. olacağının təyin olunmasıdır. Bu insan üçün də etibarlıdır, təbii olaraq. Məsələn əgər embrionu vakuumlu bir mühitə yerləşdirər və cazibənin təsirlərini pozacaq başqa üsullar tətbiq etsəniz, embrion doğru inkişaf etməyəcək və çox ehtimalla şikəst doğumlar və hətta ölüm reallaşacaq.

Bir digər nümunə, insanlardan verilə bilər: Bildiyiniz kimi insan növü normalda dörd ayaqlı (tetrapod) atalardan gəlməkdədir. Daha sonra müvəqqəti iki ayaqlı olan atalarımız təkamül keçirmiş, bu vaxtdan sonra 8 milyon il qədər əvvəl gorillər ilə, 6 milyon il qədər əvvəl şimpanzelərlə ayrıldıq. Son 6 milyon ildir davam edən təkamülümüzdə isə tam olaraq iki ayaq üzərinə qalxdıq və tam iki ayaqlı yəni bipedal olduq. Bu müddətdə insan növünü hamiləliyi həmişə üfüqi olaraq reallaşarkən, indi şaquli olaraq reallaşmağa başladı. Yəni hamilə bir dişinin balası qarın tərəfindən cazibəyə qarşı əks gələ bilirdi, hal-hazırda isə embrion çıxa biləcəyi açıqlığa doğru cazibə ilə çəkilə biləcək bir mövqedə şaquli olaraq var. İnsanın ayağa qalxması və balaların şaquli olaraq böyüməsi, əzələ və skelet sistemimizin də quruluşunu dəyişdirmişdir. Bütün bunların təsiri nəticəsində insan növünün hamiləlik müddətini qısaltmışdır. Çünki əgər qadınlar atalarımızda olduğu kimi daha uzun müddətli hamiləlik dövrləri keçirib, daha inkişaf etmiş balalar doğsaydılar, körpənin pelvikdən çıxması və hamiləlik boyunca edəcəyi təzyiq çox şiddətli olacaq və doğum edən qadınların çoxu öləcəkdi. Ki, bir dövr tetrapodan bipedala təkamülləşərəkən belə bir keçid yaşanmışdır və sabitləyici təbii seçim sayəsində hamiləlik müddəti nəsillər nəticəsində optimize edilmişdir.

Leave a Reply

96 Comments on "Cazibə qüvvəsi və Təkamül Üzərindəki Təsiri"

Notify of
avatar
Sort by:   newest | oldest | most voted
check that
Guest

I simply want to say I am very new to weblog and seriously liked you’re page. Probably I’m planning to bookmark your site . You actually come with really good articles. Kudos for sharing with us your blog.

_EmeRy EPS
Guest

I merely need to tell you that I am new to having a blog and incredibly liked your write-up. Most likely I am probably to bookmark your blog post . You literally have magnificent article blog posts. Delight In it for telling with us your web document

FAytech North America(
Guest

Faytech North America is a touch screen Manufacturer of both monitors and pcs. They specialize in the design, development, manufacturing and marketing of Capacitive touch screen, Resistive touch screen, Industrial touch screen, IP65 touch screen, touchscreen monitors and integrated touchscreen PCs. Contact them at http://www.faytech.us, 121 Varick Street, New York, NY 10013, +1 646 205 3214

Fashion
Guest

You are my inspiration , I own few blogs and rarely run out from to post .I think this site has got some rattling wonderful information for everyone. “The best friend is the man who in wishing me well wishes it for my sake.” by Aristotle.

News
Guest

I like this site so much, saved to my bookmarks. “American soldiers must be turned into lambs and eating them is tolerated.” by Muammar Qaddafi.

mEtroclick&
Guest

MetroClick specializes in building completely interactive products like Photo Booth for rental or sale, Touch Screen Kiosks, Large Touch Screen Displays , Monitors, Digital Signages and experiences. With our own hardware production facility and in-house software development teams, we are able to achieve the highest level of customization and versatility for Photo Booths, Touch Screen Kiosks, Touch Screen Monitors and Digital Signage. Visit MetroClick at http://www.metroclick.com/ or , 121 Varick St, New York, NY 10013, +1 646-843-0888

News
Guest

I like this web site so much, bookmarked. “American soldiers must be turned into lambs and eating them is tolerated.” by Muammar Qaddafi.

Pozycjonowanie Stron Google
Guest

Generally I do not learn post on blogs, but I wish to say that this write-up very forced me to take a look at and do so! Your writing taste has been amazed me. Thanks, quite great post.

Tractor Workshop Manuals
Guest

A lot of thanks for every one of your labor on this website. My mom really loves conducting internet research and it is easy to understand why. Most people notice all concerning the powerful means you provide invaluable things by means of your website and even encourage contribution from some others on the subject matter then my princess is truly becoming educated a whole lot. Take pleasure in the rest of the year. You’re the one carrying out a superb job.

Strony Internetowe Gorzow
Guest

You are my aspiration , I have few blogs and occasionally run out from to post .

News
Guest

I do agree with all the ideas you have offered in your post. They’re very convincing and can definitely work. Still, the posts are very brief for beginners. May you please lengthen them a bit from subsequent time? Thank you for the post.

News
Guest

I really appreciate this post. I have been looking all over for this! Thank goodness I found it on Bing. You have made my day! Thx again!

News
Guest
I wanted to type a brief message to appreciate you for the amazing guidelines you are writing at this website. My incredibly long internet search has at the end of the day been paid with reputable insight to talk about with my friends and family. I would suppose that most of us website visitors actually are definitely blessed to live in a really good network with very many perfect people with beneficial tricks. I feel pretty happy to have come across your web page and look forward to some more amazing minutes reading here. Thank you once again for a… Read more »
Zwrot Podatku z Zagranicy Szczecin
Guest

I do consider all the ideas you have offered for your post. They are really convincing and will definitely work. Nonetheless, the posts are too quick for newbies. May just you please prolong them a little from next time? Thank you for the post.

Fashion
Guest

Excellent read, I just passed this onto a friend who was doing some research on that. And he just bought me lunch because I found it for him smile So let me rephrase that: Thank you for lunch! “A thing is not necessarily true because a man dies for it.” by Oscar Fingall O’Flahertie Wills Wilde.

Wyplaty Kindergeld 2018
Guest

As soon as I found this internet site I went on reddit to share some of the love with them.

John Deere Repair Manuals
Guest

Really great post to hang on.. I’m very impressed with this article. Looking for more info.

shop homes
Guest

Great amazing things here. I¡¦m very glad to see your article. Thanks so much and i’m having a look ahead to contact you. Will you please drop me a e-mail?

home improvement
Guest

Great remarkable issues here. I¡¦m very glad to peer your post. Thanks so much and i am having a look ahead to touch you. Will you kindly drop me a mail?

News
Guest

Some really superb blog posts on this web site , thankyou for contribution.

News
Guest

Good – I should definitely pronounce, impressed with your web site. I had no trouble navigating through all the tabs and related information ended up being truly easy to do to access. I recently found what I hoped for before you know it in the least. Reasonably unusual. Is likely to appreciate it for those who add forums or anything, site theme . a tones way for your customer to communicate. Nice task.

Najnowsze Maszyny Rolnicze
Guest

Very interesting info !Perfect just what I was searching for! “I meant what I said, and I said what I meant. An elephant’s faithful, one hundred percent.” by Dr. Seuss.

News
Guest

Merely a smiling visitant here to share the love (:, btw outstanding design and style .

blogcabinca.org
Guest

It is appropriate time to make some plans for the future and it’s time to be happy. I’ve read this post and if I could I wish to suggest you some interesting things or advice. Perhaps you could write next articles referring to this article. I desire to read even more things about it!

bestresearchpapers.net
Guest

What i do not realize is in fact how you’re not actually much more smartly-appreciated than you might be right now. You are so intelligent. You already know therefore significantly on the subject of this subject, produced me in my opinion consider it from numerous varied angles. Its like women and men don’t seem to be interested until it¡¦s one thing to accomplish with Woman gaga! Your own stuffs outstanding. Always maintain it up!

5aswiss.com
Guest

Hi there, You have done an excellent job. I’ll certainly digg it and personally suggest to my friends. I’m confident they will be benefited from this website.

Fashion
Guest

I’ve recently started a website, the info you offer on this website has helped me tremendously. Thank you for all of your time & work. “It is a great thing to know our vices.” by Cicero.

cool electronics
Guest

I savour, result in I discovered exactly what I used to be having a look for. You’ve ended my four day long hunt! God Bless you man. Have a nice day. Bye

Home Improvement
Guest

I really like your writing style, fantastic info, thank you for posting :D. “Much unhappiness has come into the world because of bewilderment and things left unsaid.” by Feodor Mikhailovich Dostoyevsky.

Pozycjonowanie Stron Internetowych
Guest

Hi my friend! I wish to say that this article is awesome, nice written and come with approximately all vital infos. I would like to see more posts like this.

Home Improvement
Guest

hi!,I really like your writing very so much! proportion we keep in touch extra about your post on AOL? I need a specialist on this area to unravel my problem. May be that is you! Taking a look forward to look you.

Gartentore Aus Polen
Guest

Someone necessarily assist to make critically articles I would state. That is the first time I frequented your web page and thus far? I amazed with the analysis you made to create this actual post incredible. Fantastic task!

game development
Guest

Keep functioning ,impressive job!

brandsfavor.com
Guest

Hello my friend! I wish to say that this post is amazing, great written and come with approximately all significant infos. I¡¦d like to look extra posts like this .

http://www.chanelpascher.com
Guest

I loved as much as you’ll receive carried out right here. The sketch is attractive, your authored material stylish. nonetheless, you command get got an edginess over that you wish be delivering the following. unwell unquestionably come more formerly again as exactly the same nearly a lot often inside case you shield this hike.

Home Improvement
Guest

fantastic points altogether, you simply gained a logo new reader. What would you suggest in regards to your publish that you just made a few days in the past? Any sure?

laczenie rur pp z metalowymi
Guest

I’ve learn several just right stuff here. Certainly value bookmarking for revisiting. I wonder how much effort you set to create this type of great informative web site.

sklep bhp
Guest

Some truly nice and useful info on this web site, too I conceive the style and design contains good features.

healthexpo2015.net
Guest

Thanks , I’ve just been searching for information approximately this subject for a long time and yours is the best I’ve discovered so far. However, what concerning the conclusion? Are you sure in regards to the supply?

crammonduk.com
Guest

I’ve been absent for a while, but now I remember why I used to love this web site. Thanks , I¡¦ll try and check back more frequently. How frequently you update your site?

historicdowntownmocksville.com
Guest

We are a group of volunteers and starting a new scheme in our community. Your website provided us with valuable information to work on. You have done a formidable job and our whole community will be grateful to you.

News
Guest

Heya i’m for the first time here. I found 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.

RiedellSkates
Guest

whoah this blog is wonderful i love studying your articles. Keep up the good work! You understand, many people are looking round for this info, you could aid them greatly.

Home Improvement
Guest

Keep up the excellent work , I read few blog posts on this internet site and I believe that your blog is rattling interesting and has got circles of fantastic information.

Home Improvement
Guest

But wanna state that this is very beneficial , Thanks for taking your time to write this.

PrestigeHome
Guest

Thanks for the sensible critique. Me and my neighbor were just preparing to do some research about this. We got a grab a book from our local library but I think I learned more clear from this post. I am very glad to see such excellent information being shared freely out there.

AcademicHealth
Guest

Hello my friend! I wish to say that this article is awesome, nice written and come with almost all significant infos. I¡¦d like to see extra posts like this .

ChildrenEducational
Guest

Hiya, I am really glad I’ve found this info. Today bloggers publish only about gossips and internet and this is really annoying. A good website with exciting content, this is what I need. Thank you for keeping this web site, I’ll be visiting it. Do you do newsletters? Cant find it.

ManagementAccounting
Guest

Hiya, I’m really glad I have found this information. Today bloggers publish only about gossips and web and this is really irritating. A good blog with interesting content, this is what I need. Thank you for keeping this site, I will be visiting it. Do you do newsletters? Cant find it.

Buty Jeansowe Meskie
Guest

I conceive you have observed some very interesting details , appreciate it for the post.