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Summary:: The most basic issue queried
Why do we know so little about black holes?
Why do we know so little about black holes?
It actually started off as a serious question by @DaveC426913 but his post #1 somehow disappearedPeroK said:Doesn't this belong in the "lame jokes" thread?
So Dave is, is, spaghettified now?phinds said:It actually started off as a serious question by @DaveC426913 but his post #1 somehow disappeared
Or maybe firewalled...berkeman said:So Dave is, is, spaghettified now?
I do not recall this. Are you suggesting I started this thread? No. I would have been more descriptive with my subject line.phinds said:It actually started off as a serious question by @DaveC426913 but his post #1 somehow disappeared
Unless there was information loss.DaveC426913 said:I do not recall this. Are you suggesting I started this thread? No. I would have been more descriptive with my subject line.
Huh. Maybe I'm having a senior moment but I could have sworn the original post was yours. Guess my memory isn't what it used to be *DaveC426913 said:I do not recall this. Are you suggesting I started this thread? No. I would have been more descriptive with my subject line.
Whereas this subject line has no hair.DaveC426913 said:I would have been more descriptive with my subject line.
No. It belongs in the "April 1 jokes" thread - wherever that thread is...PeroK said:Doesn't this belong in the "lame jokes" thread?
Heh, heh, I started one several years ago, here.A. Neumaier said:No. It belongs in the "April 1 jokes" thread - wherever that thread is...
Huh? Is that because they have a stronger cultural emphasis on bleaching?Klystron said:Rumor has it French speaking scientists objected to the term as undignified.
Sadly, most physicists don’t Kerr.ergospherical said:Many physicists are satisfied with a Kerrsory understanding.
My knowledge of French colloquialism being non-existent, the translation evoked a different body part.strangerep said:Huh? Is that because they have a stronger cultural emphasis on bleaching?
Even rereading the thread several times, I still don't know what term exactly it is the French find undignified... Unless it's 'black hole'.Klystron said:My knowledge of French colloquialism being non-existent, the translation evoked a different body part.
When I was a child, I was taught by engineers and scientists who had read physics papers in German and certain math and electronics papers in French. English translations for Americans contained many assumptions, misunderstandings and errors. My dad's old science textbooks written in English often contained untranslated sections in European languages that the student was assumed to understand. To this day I am still learning what some old textbooks actually meant.DaveC426913 said:Even rereading the thread several times, I still don't know what term exactly it is the French find undignified... Unless it's 'black hole'.
A black hole is a region in space where the gravitational pull is so strong that nothing, including light, can escape from it. It is formed when a massive star dies and its core collapses under its own gravity.
Black holes can range in size from a few miles to billions of times the mass of our sun. The size of a black hole is determined by its mass, with larger black holes having stronger gravitational pulls.
Yes, black holes are thought to be eternal. They do not disappear or dissipate over time, unlike other celestial bodies. However, they can grow larger by absorbing matter and merging with other black holes.
No, anything that enters a black hole, including matter and light, is pulled into its singularity and crushed into an infinitely small point. The intense gravitational forces also cause extreme tidal forces that would tear anything apart.
Black holes themselves cannot be seen, as they do not emit any light. However, the effects of a black hole, such as its strong gravitational pull on surrounding matter, can be observed by scientists using telescopes and other instruments.