I moved into a place a few months ago, and now we're into the cold season. My landlords, thus far, have been little help in the concern for renter department. Upon renting I was told we pay for gas heat. So, gas is turned on now, but I never gained info on when the furnace was last inspected- if ever. That aside, I've read every article on what to do in case of CO poisoning, which detector to buy, what to look for as far as maintenance of said furnace, etc. I am still nervous to breathe in here. I have these visions of invisible gas filling up the home, whether the furnace is in good working condition or not. I fear I may be stuck with the bill to get a pro out here to look at it. Someone please talk to me about how this whole gas thing works and what sort of risk if any, I have. The furnace is downstairs, the pipe to the roof looks like it's fine, the pilot is the right color, yet, I still don't trust the damn thing. Help.
Yes they are real and who said black holes were two dimensional?
depends what part of the black hole you're talking about. the singularity is like a hole in space (if it exists). the event horizon is more like a curtain that hides the inside from the rest of the universe. stuff goes in, it doesn't come out again, and we can't see what happens inside.
confusing aspect. query with bing and yahoo. it might help!
A G4 bulb is correct. It either has 4 pins that pulls straight out or 2 posts in this case you push the light in a little give it about a 1/4 turn to the left.
You are correct that they appear as black spheres in our three dimensional universe(three spacial dimensions). The reason they are called holes is a reference to the two dimensional analogy that is usually used to explain General Relativity. In this analogy, we don't live in 3 dimensions, only 2, and our space is portrayed as a thin sheet of 2 dimensional rubber stretched tight. When we throw a bowling ball onto this rubber sheet, it warps downward, causing a three dimensional hole to form in our 2 dimensional sheet. Various masses generate holes that have various depths, with the more massive objects having deeper holes. A black hole results when the hole is so massive and so deep that the escape velocity is so great that it exceeds the speed of light, thus not allowing even light to escape. ( A two dimensional being living in this two dimensional universe would view this hole as a circle.) The 3 dimensional warping of our 2 dimensional rubber space is in a manner very similar to how mass warps our three dimensional space in General Relativity, except that we do not live in a 2 dimensional universe, but rather, we are blessed with 3 dimensions. The warpage in our Universe is occurring into the 4th dimension of space-time. So in summary, black holes are a 4th dimensional warpage of our three dimensional space. Kind of mind blowing, isn't it? When Einstein first proposed General Relativity, he commented quite seriously that he thought only 12 people on Earth were capable of understanding his theory.
