Black Holes
Black holes are possibly the most famous of all the stellar phenomena. Probably because they are so mysterious and their truth eludes us. We will never be able to actually see a black hole with the naked eye, but through experiments we can be relatively sure that they do exist. The actual Definition of a black hole is kind of sketchy, but most people say that they are just a non-dimensional (or very small diameter) singularity (A singularity is "a point in space-time in which the space-time curvature becomes infinite"). (A Brief History of Time, 186) surrounded by a kind of membrane called its event horizon. The event horizon is simply the boundary of a black hole. More specifically, it is the sphere around the black hole inside which nothing can pass without being inevitably eaten by the hole. By any definition, a black hole is a point in space in which time and space are so distorted that they form a never-ending infinite loop. This is caused by the immense gravitational effects resulting after a massive star has died. Not just any star can die and become a black hole. The mass of the star, before it starts its death cycle, has to be above a certain limit. This is called the Chandrasekhar limit. (It is named for Sub
These particles are virtual particles like the particles that carry the gravitational force of the sun: unlike real particles, they cannot be observed directly with a particle detector. " (How Can We See Black Holes?) Also, there could be bulges in nearby stars that would indicate a very powerful nearby force. In a very, very large black hole it would be hours before you would experience any extreme discomfort from the gravity. As I said before, the particle and antiparticle pairs find each other, come together, move apart, and then annihilate. Sometimes when they move apart, the antiparticle gets caught inside the event horizon and the real particle escapes (The particle that escapes is always positive and the antiparticle is always negative because real particles are always positive). Therefore, they expand vertically (outward from the earth in this case) and contract horizontally. The resulting X-ray emissions could point to the presence of the black hole. When they start to get close to the earth they have to get closer together for them to hit their target on the earth's surface. But, all that time before you die is boring, so let's just skip to the singularity. "Though we cannot 'see' a black hole itself (since not even light can escape the hole's gravitational field), we may see the hole's effects on nearby matter. "Move apart" needs to be emphasized because this is the part of the process that explains our painted holes. These escaping particles look like they're emitting from inside the black hole. Just because you pass the event horizon doesn't mean that you automatically get stretched into infinity and die.
Common topics in this essay:
Brief History,
,
Black Holes,
black hole,
Arthur Eddington,
Chef Boyardee,
event horizon,
particle antiparticle,
brief history,
move apart,
Chandrasekhar Indian,
black holes,
move apart annihilate,
hole black holes,
uncertainty principle,
inside black,
definition black hole,
definition black,
real particles,
black hole black,
die black hole,
|
Acceptance Essays
