We are here with you hands in hands to facilitate your learning & don't appreciate the idea of copying or replicating solutions. Read More>>

Looking For Something at vustudents.ning.com? Click Here to Search


+ Link For Assignments, GDBs & Online Quizzes Solution


+ Link For Past Papers, Solved MCQs, Short Notes & More

-----|| DARK ENERGY ||-----

Much is unknown than is
known abt the DARK ENERGY.

We know how
much dark energy there is
because we know how it
affects the Universe's

Other than that, it is a complete
mystery. But it is an
important mystery. It turns
out that roughly 70% of the Universe is dark

One explanation for dark
energy is that it is a
property of space. 

Einstein was the first
person to realize that empty space is
not nothing. Space has amazing properties, many of which are just
beginning to be understood.

The first
property that Einstein discovered is
that it is possible for more space to
come into existence. 
Then one version
of Einstein's gravity theory, the version that contains a cosmological constant , makes a second prediction: "empty space" can possess
its own energy. 

Because this energy is
a property of space itself, it would not
be diluted as space expands. As more
space comes into existence, more of
this energy-of-space would appear. As a result, this form of energy would
cause the Universe to expand faster
and faster. 

Unfortunately, no one
understands why the cosmological
constant should even be there, much
less why it would have exactly the right value to cause the observed
acceleration of the Universe.

Another explanation for how space
acquires energy comes from the
quantum theory of matter. In this
theory, "empty space" is actually full of
temporary ("virtual") particles that
continually form and then disappear.

But when physicists tried to calculate
how much energy this would give
empty space, the answer came out
wrong - wrong by a lot.

The number
came out 10 times too big. That's a 1 with 120 zeros after it. It's hard to
get an answer that bad. So the mystery

+ Click Here To Join also Our facebook study Group.

..How to Join Subject Study Groups & Get Helping Material?..

..How to become Top Reputation, Angels, Intellectual, Featured Members & Moderators?..

See Your Saved Posts Timeline

Views: 73


+ http://bit.ly/vucodes (Link for Assignments, GDBs & Online Quizzes Solution)

+ http://bit.ly/papersvu (Link for Past Papers, Solved MCQs, Short Notes & More)

+ Click Here to Search (Looking For something at vustudents.ning.com?)


You need to be a member of Virtual University of Pakistan to add comments!

Join Virtual University of Pakistan

Comment by +* Hadia Ansari╰☆╮ on May 18, 2012 at 9:24pm

waaaoooooooooooo  nice sharing

Comment by Sayed Ahmad Shah on May 18, 2012 at 11:22am

Nice information 

Comment by Sadia Khan on May 1, 2012 at 8:23am

good job...........thanks 4 sharing..

Comment by _╣Ayesha Awan╠_ on April 30, 2012 at 8:33pm

got information. keep it up!

Latest Activity

M +S +K updated their profile
17 minutes ago
Sharal Khan replied to Sharal Khan's discussion jag gumya ma :-p
31 minutes ago
Sharal Khan replied to Sharal Khan's discussion jab koi apko pgl .........
32 minutes ago
Sharal Khan replied to Sharal Khan's discussion jab koi apko pgl .........
32 minutes ago
Sharal Khan replied to Sharal Khan's discussion mudat bad............ ;-)
32 minutes ago
Sharal Khan commented on Sharal Khan's blog post ALLAH.........
34 minutes ago
M +S +K posted a status
"Ajab Saneha Hai Ke Itni Be Rukhi Ke Bawajood Bhi Woh Sang Dil, Mere Dil Mein Utarta Gaya, Mere Dil Se Nahi Utara"
39 minutes ago
M +S +K posted a status
"aina dekh apna sa munh le ke rah gaya sahab ko dil na dene pe kitna guroor tha"
40 minutes ago

© 2019   Created by + M.Tariq Malik.   Powered by

Promote Us  |  Report an Issue  |  Privacy Policy  |  Terms of Service