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<DIV style="FONT-SIZE: 14pt; FONT-FAMILY: 'Calibri'; COLOR: #000000">
<DIV><FONT size=4>Dear <SPAN lang=EN-US
style="LINE-HEIGHT: 16pt; TEXT-INDENT: 0cm">Xueshan,<BR></SPAN></FONT></DIV>
<DIV><FONT size=4><SPAN lang=EN-US style="LINE-HEIGHT: 16pt; TEXT-INDENT: 0cm">I
have only one remark.<BR>The Nobel Prize is given to researchers but not to the
Black hole and not to any other object in the Cosmos!</SPAN></FONT></DIV><FONT
size=4><SPAN lang=EN-US style="LINE-HEIGHT: 16pt; TEXT-INDENT: 0cm">
<DIV><BR>Without observer there is no Black hole entropy, there is no
information.<BR></DIV>
<DIV>So, the consciousness is needed to reflect reality and to assume some
reflections as information.</SPAN></FONT></DIV>
<DIV><FONT size=4><SPAN lang=EN-US
style="LINE-HEIGHT: 16pt; TEXT-INDENT: 0cm"></SPAN></FONT> </DIV>
<DIV><FONT size=4><SPAN lang=EN-US
style="LINE-HEIGHT: 16pt; TEXT-INDENT: 0cm">Friendly
greetings</SPAN></FONT></DIV>
<DIV><FONT size=4><SPAN lang=EN-US
style="LINE-HEIGHT: 16pt; TEXT-INDENT: 0cm">Krassimir</SPAN></FONT></DIV>
<DIV><FONT size=4><SPAN lang=EN-US
style="LINE-HEIGHT: 16pt; TEXT-INDENT: 0cm"></SPAN></FONT> </DIV>
<DIV><FONT size=4><SPAN lang=EN-US
style="LINE-HEIGHT: 16pt; TEXT-INDENT: 0cm"></SPAN></FONT> </DIV>
<DIV><FONT size=4><SPAN lang=EN-US
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<DIV> </DIV>
<DIV style="BACKGROUND: #f5f5f5">
<DIV style="font-color: black"><B>From:</B> <A title=yxs@pku.edu.cn
href="mailto:yxs@pku.edu.cn">Xueshan Yan</A> </DIV>
<DIV><B>Sent:</B> Tuesday, October 06, 2020 3:37 PM</DIV>
<DIV><B>To:</B> <A title=fis@listas.unizar.es
href="mailto:fis@listas.unizar.es">FIS Group</A> </DIV>
<DIV><B>Subject:</B> [Fis] black hole and information</DIV></DIV></DIV>
<DIV> </DIV></DIV>
<DIV
style='FONT-SIZE: small; TEXT-DECORATION: none; FONT-FAMILY: "Calibri"; FONT-WEIGHT: normal; COLOR: #000000; FONT-STYLE: normal; DISPLAY: inline'>
<DIV class=WordSection1>
<P class=MsoNormal style="TEXT-INDENT: 0cm"><SPAN lang=EN-US
style="FONT-SIZE: 12pt">Dear colleagues</SPAN><SPAN
style="FONT-SIZE: 12pt">，<SPAN lang=EN-US><o:p></o:p></SPAN></SPAN></P>
<P class=MsoNormal style="TEXT-INDENT: 0cm"><SPAN lang=EN-US
style="FONT-SIZE: 12pt"><o:p></o:p></SPAN> </P>
<P class=MsoNormal style="TEXT-INDENT: 0cm"><SPAN lang=EN-US
style="FONT-SIZE: 12pt">This year's Nobel Prize in physics goes to black hole
research today. When the curvature of space-time of a celestial body is so large
that even light cannot escape from its event horizon, we call it a black hole.
I. Once a black hole is formed, except for mass, angular momentum, and electric
charge, all the previous material properties as objects disappear; II. The
horizon area of the black hole is equal to its entropy (entropy equals negative
information). These two issues form a close relationship between the research of
black hole and information. The follow-up effect of this year's Nobel Prize in
physics may lead to further thinking on the information in the future by
astrophysicists, and lay a reverie foundation for the informational
interpretation of matter several years later.<o:p></o:p></SPAN></P>
<P class=MsoNormal style="TEXT-INDENT: 0cm"><SPAN lang=EN-US
style="FONT-SIZE: 12pt"><o:p></o:p></SPAN> </P>
<P class=MsoNormal style="TEXT-INDENT: 0cm"><SPAN lang=EN-US
style="FONT-SIZE: 12pt">Best wishes and health,<o:p></o:p></SPAN></P>
<P class=MsoNormal style="TEXT-INDENT: 0cm"><SPAN lang=EN-US
style="FONT-SIZE: 12pt">Xueshan</SPAN><SPAN lang=EN-US
style="FONT-SIZE: 12pt"><o:p></o:p></SPAN></P></DIV>
<P>
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