|
On March 15 2006 18:51 pansy wrote:Here's a review. A review on Amazon gives the same opinion. edit: Amazon gets auto-linked? forum hacks!
Mostly complaints about his writing style. As I said in my first post his English isn't that great. It looks worse than it is usually. It's no surprise to me people didn't like the structure of a book he made.
I haven't read that much yet but his poor English plus my lack of reading is giving me some doubts as to whether he thinks this will happen or it is one of other possible explanations. I'm thinking the latter because his primary concern seems to be " Dark Visitor is a science recruiting tool...However, the time scale in Dark visitor is entirelly based on the need to get some pre lawers interested in science NOW. It is a painless, I hope interesting, way to learn a lot of physics." (from a PM I just got from him). Or that, as it says in the intro "the when is speculative", not the if. I still stand by my recomendation, especially since it's free. Based on what I've seen of him before, there should be some worthwhile stuff in there.
|
Any black hole within 10,000 light years (probably more, I can ask my cosmologist friend who's working on this for his PhD) would be easily detected by its gravitational lensing effects. Any object of that mass which was already within 2 light-years (it's supposed to "pass" us in two years? i assume that's an approach << 1 LY) passing us in the next two years would be close enough that we'd already have felt its effects in a number of other ways.
Black holes do move. "Jeebus!" for whoever posted arguing that.
Like any other massive object they can form binary systems (mutual orbiting of two objects around their combined center of mass) with other stars or black holes, but don't need to.
Black holes aren't really fundamentally different from any other massive stellar object. Their density is larger, hence the "blackness". Otherwise, just consider them like any other (relatively massive) star.
|
United Kingdom10597 Posts
|
Changes in Neptune's orbit? i haven't heard that before :/
|
On March 15 2006 21:34 Clutch3 wrote: Any black hole within 10,000 light years (probably more, I can ask my cosmologist friend who's working on this for his PhD) would be easily detected by its gravitational lensing effects. Any object of that mass which was already within 2 light-years (it's supposed to "pass" us in two years? i assume that's an approach << 1 LY) passing us in the next two years would be close enough that we'd already have felt its effects in a number of other ways.
Black holes do move. "Jeebus!" for whoever posted arguing that.
Like any other massive object they can form binary systems (mutual orbiting of two objects around their combined center of mass) with other stars or black holes, but don't need to.
Black holes aren't really fundamentally different from any other massive stellar object. Their density is larger, hence the "blackness". Otherwise, just consider them like any other (relatively massive) star.
|
Ok blackhole! You can freeze our planet but lets see who is faster! GOGO CO2 MASS PRODUCTION!!!
No blackhole can stop human selfdestruction hahaha!!!
-__-
|
Listen to this guy.
On March 15 2006 21:34 Clutch3 wrote: Any black hole within 10,000 light years (probably more, I can ask my cosmologist friend who's working on this for his PhD) would be easily detected by its gravitational lensing effects. Any object of that mass which was already within 2 light-years (it's supposed to "pass" us in two years? i assume that's an approach << 1 LY) passing us in the next two years would be close enough that we'd already have felt its effects in a number of other ways.
Black holes do move. "Jeebus!" for whoever posted arguing that.
Like any other massive object they can form binary systems (mutual orbiting of two objects around their combined center of mass) with other stars or black holes, but don't need to.
Black holes aren't really fundamentally different from any other massive stellar object. Their density is larger, hence the "blackness". Otherwise, just consider them like any other (relatively massive) star.
As it probably isn't approaching at anywhere close to light speed, it would need to be within a fraction of a light year in fact... And about expanding universe and everything moving away from each other: that effect is only visible on a VERY large scale. Like galaxy clusters moving away from each other.
|
Did somebody forget to elaborate on the 378 day year or did I miss something?
|
|
Look, everyone knows that black holes only move from left to right; they don't even have a Z-axis, look in any physics book.
If everyone in the world jumps to their left simultaneously, the Earth will be perturbed to the right, effectively "cloaking" planet Earth from the influence of 2-dimensional black holes, which can only scroll left-to-right (think Mario Bros. for NES). I don't mean to condescend you guys with my intellect, I am using basic conservation of energy here, this is not complicated. I can't even believe we are discussing this.
Rest assured, a plan will be formed when the times comes.
|
Belgium8305 Posts
Servolisk, why are you defending this "scientist" so fiercely?
The crappy English in his book makes it look extremely unprofessional. You know they have editors and such for that stuff, right?
Also, any serious scientist would rather publish articles about this or at least write a very serious book on the matter, while this is obviously some sensationalist bullshit.
And most importantly, who are we to believe, this shady retired guy, or the thousands of scientists that are peering into space every day and haven't noticed anything? A black hole, due to its nature, can be detected from very very far away, as indicated earlier in this thread.
Even if this guy just wants to get kids interested in astronomy and/or physics, spouting this kind of unfounded unprofessional crap really isn't the way.
|
If everyone in the world jumps to their left simultaneously
To any arbitrary left? 
I realize the post was sarcastic, but I'm not sure if you noticed this.
If you did just ignore me. . . Or something
|
On March 16 2006 03:43 Paragon wrote: Did somebody forget to elaborate on the 378 day year or did I miss something?
If the black hole threw earth's orbit a bit further out, it would take more time for 1 revolution around the sun, ie a longer year.
|
|
|
|