: I am a young cuban professor of Fisics of secundary scholl, I am very interested in blackholes. Actually I work in a actualization of the Fisics course and I incorporate a blackholes problems in my course.

: Please, I need more information about Blackholes. : I am very interested in this topic and in any new methods in a Fisic's Didactics.

: Thank you very much in advance and Sorry for my bad English.

: Nuria Torres Barreto

: Address: : A.P. 678, C.P. 11300 : Habana 13 : Cuba

: e-mail: biokarst@cidea.unepnet.inf.cu

Blackholes are fairly easy to understand. They consist of the remains of old blue and red giants - certain stars consisting of large quantities of matter. The formation of a blackhole occurs when one of these giant stars undergoes a supernova. Once the supernova occurs, most of the excess matter collapses on itself because of the intense gravitational force. If a star is big enough, its gravitational force is so intense that it captures light and the object(if we can call it that) emits X-rays. We obviously need light to see something, so how can we see a blackhole? Well, through a spectrometer, if we see spikes of x-ray light being emitted from a source, that will tell us if a blackhole resides in that spot. The first observed blackhole is called, "Cygnus X-1."

• Re: Young Cuban Professor need Help - Michael_Moosman/">Michael Moosman - September 9, 1998 - 20:20 UTC
• Re: Young Cuban Professor need Help - Jay_Nixon/">Jay Nixon - January 10, 2000 - 12:55 UTC