Skip to main content

Black holes....???


i'm pretty interesting about black holes!!coz it's one of the great mysteries....
What goes on inside is unknown.
What we refer to as the black hole is actually a kind of "surface" at which the velocity required for escape equals Speed of light(1079,252,848.8 km/h).
we can prove it according to this formula...

If G - gravitational constant
M - mass of a body whose is
R - radius

the escape velocity is,





In the case of a black hole, this velocity is equal to c the speed of light,
hence the radius(Schwarzschild) of a black hole is expressed as -



The collapsing star of a supernova will turn into a neutron star only if its mass is less than about two or three times of the Sun. If the mass is greater, then even the star's huge density cannot hold gravity back, and instead of a neutron star the supernova creates a "star" that nothing can support against gravity. At a small enough radius, the gravitational force becomes so great that light can't escape, and the star disappears forever into a "black hole."

isn't it amazing???
Labels:

Comments

DoT [ . ] said…
Great work my pal
keep it up!!!
yea u r doing a great job through this....
keep up ur good work
all the very best :)
December 19, 2006 at 9:21 PM
Post a Comment

Popular posts from this blog

Did I lose Something??

You were with her.. After You said You love me But.... why should I cry?? Did I lose Something?? I listened ... the way You feel about her But.... why should I cry?? Did I lose Something?? I shared .... The pain of Your past But.... why should I cry?? Did I lose Something?? I realized ... I'm not the one in Your dreams.. But.... why should I cry?? Did I lose Something?? I cried... Because I love You.. But.... why should I cry?? Did I lose Something?? ..............??? I should Cry my love..!! Coz... You are not something... You are my EVERYTHING ....!!!
13 comments
Read more

Photography..!!!

Sir John Herschel,he was the one who first used the term in 1839.That is the year the photographic process became public."PHOTOGRAPHY" is derived from the Greek words for light("phos") and writing/paint brush ("graphis"). There are two distinct scientific processes that combine to make photography possible. The first of these processes was optical.The second process was chemical. Photography is so useful for human beings....Scientists have used photography to record and study.Security forces use photography for recognition and data storage. Specially Photography is used to preserve memories of favorites and as a source of entertainment. finally i want to mention this as well... U cannot be a photographer as soon as u get a camera...u need a creative eye to capture the view through the camera... mhhh.... i don't know whether i have that creativeness or not coz still i don't have a camera..... :( Like to be a Photographer...!!! Have a nice day.. frie...
8 comments
Read more

Sri Lankan Government Vs Indian Government..!!

Yesterday I received two News Alert SMSs to ma mobile phone. It says that Indian Home minister and National Security adviser have resigned after the Mumbai attack. This thing is not familiar with Sri Lankan politics. How lucky Indian people to have politicians like this..!If this Mumbai incident happen in Sri Lanka then ... then what?? nothing gonna happen except death of innocent civilians. If this happen in Sri Lanka .. it will be just an incident, that's all and nothing more than that. Now the war is doing well in Sri Lanka.Yeah that's true that Sri Lankan Soldiers sacrificing their lives to destroy the terrorism.But most of the politicians can't understand the value of this.. Actually they can understand it but they don't like to understand it.. because the understanding of the reality is disadvantage for their persistence.
1 comment
Read more