## Average Temperature of the Universe

Discuss Physics and Physics Olympiad related problems here
MATHPRITOM
Posts: 190
Joined: Sat Apr 23, 2011 8:55 am
Location: Khulna

### Average Temperature of the Universe

2.735 K to degrees Celsius is the average temperature of the universe. But, how can we measure it ? & How scientists measured it ?

Posts: 1016
Joined: Tue Nov 22, 2011 7:49 pm
Location: 127.0.0.1
Contact:

### Re: Average Temperature of the Universe

আপনি কোনটা জানতে চাচ্ছেন? Practically না Theoretically?Practically মাপা হয়েছিল রেডিও টেলিস্কোপ দিয়ে।তবে Theoretically কীভাবে করা যায় সেটা বলতে পারব না। তবে যাই হোক খুব সোজা কিছু নিশ্চয়ই হবে না। আমি একটা উপদেশ দিতে পারি; Google-এ সার্চ দিতে পারেন।
Welcome to BdMO Online Forum. Check out Forum Guides & Rules

SANZEED
Posts: 550
Joined: Wed Dec 28, 2011 6:45 pm

### Re: Average Temperature of the Universe

Asole ei tapmatrar dharona ase ei chinta theke j, jehetu mohabissho prosaronshil, shehetu amader obosshoi sei adimbissher tapmatra ebong bikiron ekhono dekhte paoa uchit. Ei dharona thekei onutot bikiron songkranto dharonar suchona. Tobe theoretically ei tapmatra mapa jai ni. shudhu bola hoi ei tapmatra porom shunner kichu upore hobe.
$\color{blue}{\textit{To}} \color{red}{\textit{ problems }} \color{blue}{\textit{I am encountering with-}} \color{green}{\textit{AVADA KEDAVRA!}}$

Posts: 1016
Joined: Tue Nov 22, 2011 7:49 pm
Location: 127.0.0.1
Contact:

### Re: Average Temperature of the Universe

SANZEED wrote:Asole ei tapmatrar dharona ase ei chinta theke j, jehetu mohabissho prosaronshil, shehetu amader obosshoi sei adimbissher tapmatra ebong bikiron ekhono dekhte paoa uchit. Ei dharona thekei onutot bikiron songkranto dharonar suchona. Tobe theoretically ei tapmatra mapa jai ni. shudhu bola hoi ei tapmatra porom shunner kichu upore hobe.
Link or source?I knew a group of scientists measured it theoretically.(Source:একটুখানি বিজ্ঞান)
BTW, either write in english or in bengali.Don't write in this way.It's not so cool.
Welcome to BdMO Online Forum. Check out Forum Guides & Rules

tanvirab
Posts: 446
Joined: Tue Dec 07, 2010 2:08 am

### Re: Average Temperature of the Universe

তাপ মূলত তড়িৎচুম্বকীয় তরঙ্গ। সুতরাং তাপ থাকরে তরঙ্গ বিকিরণ হয়। তরঙ্গের দৈর্ঘ্য নির্ভর করে কত তাপ আছে তার উপর। সুতরাং পৃথিবীর চারদিক থাইকা যেই বিকিরণ আসতেছে সেইটার তরঙ্গদৈর্ঘ্য পরিমাপ করলেই তাপমাত্রা পাওয়া যাবে।

আর তাত্ত্বিকভাবে জেনারেল রিলেটিভিটির মাধ্যমে মহাবিশ্বের তাপমাত্রা কোন সময় কত ছিল তা বাইর করা যায়। এইটা কসমোলোজিস্টদের কাজ।

SANZEED
Posts: 550
Joined: Wed Dec 28, 2011 6:45 pm

### Re: Average Temperature of the Universe

Sorry, but I don't have Bangla font. how do you all use Bangla font?
$\color{blue}{\textit{To}} \color{red}{\textit{ problems }} \color{blue}{\textit{I am encountering with-}} \color{green}{\textit{AVADA KEDAVRA!}}$

Posts: 1016
Joined: Tue Nov 22, 2011 7:49 pm
Location: 127.0.0.1
Contact:

### Re: Average Temperature of the Universe

SANZEED wrote:Sorry, but I don't have Bangla font. how do you all use Bangla font?
You have default bangla font.Otherwise how are you reading these?There are many bangla fonts.I use 'Kalpurush'.
Welcome to BdMO Online Forum. Check out Forum Guides & Rules

SANZEED
Posts: 550
Joined: Wed Dec 28, 2011 6:45 pm

### Re: Average Temperature of the Universe

SANZEED wrote:Sorry, but I don't have Bangla font. how do you all use Bangla font?
You have default bangla font.Otherwise how are you reading these?There are many bangla fonts.I use 'Kalpurush'.
How do you use it? What do I have to do?
$\color{blue}{\textit{To}} \color{red}{\textit{ problems }} \color{blue}{\textit{I am encountering with-}} \color{green}{\textit{AVADA KEDAVRA!}}$

Posts: 1016
Joined: Tue Nov 22, 2011 7:49 pm
Location: 127.0.0.1
Contact:

### Re: Average Temperature of the Universe

Oh,I missed one thing.Perhaps you are in trouble in writing bangla.You can use 'Avro'.Just download it.(Don't panic!It's not very hard!Remember you have the power of Goolge. )
Welcome to BdMO Online Forum. Check out Forum Guides & Rules

nafistiham
Posts: 829
Joined: Mon Oct 17, 2011 3:56 pm
Location: 24.758613,90.400161
Contact:

### Re: Average Temperature of the Universe

আমার ধারণা, মোট তাপশক্তি আর মোট ভোর জানলেই তো হয় । নাকি ?
$\sum_{k=0}^{n-1}e^{\frac{2 \pi i k}{n}}=0$
Using $L^AT_EX$ and following the rules of the forum are very easy but really important, too.Please co-operate.