Source - http://heiwaco.tripod.com/bomb.htm
Why a 4 400 kg heavy Atomic Bomb with only 61 kg of uranium-235 did not work 1945 and does not work today ... or ever! The free Neutrons couldn't do it!
Introduction - just
Propaganda
We are all told at school or reading books or learn one
way or another that a
first atomic bomb - a
Weapon
of Mass Destruction, WMD - was dropped by US Air Force
on Hiroshima, Japan, in the morning of August 6, 1945, to
end the 2nd World war. A
second atomic bomb was
dropped on Nagasaki a little later to really stop the war.
BBC suggests it happend like
this!
Oliver
Stone also belives in the atomic bomb and should
study this article.
According the paper
Blast
Loading and Blast Effects on Structures - An
Overview, by T. Ngo, P. Mendis, A. Gupta & J.
Ramsay, The University of Melbourne, Australia, 2007 we
learn:
"An explosion is defined as a large-scale, rapid
and sudden release of energy. …
In a nuclear explosion, energy is released
from the formation of different atomic nuclei by
the redistribution of the protons and neutrons
within the interacting nuclei
(sic), whereas the
rapid oxidation of fuel elements (carbon and
hydrogen atoms) is the main source of energy in the
case of chemical explosions. … The detonation
of a condensed high explosive generates hot gases
under pressure up to 300 kilo bar and a temperature
of about 3000-4000C°. … The hot gas
expands forcing out the volume it occupies. As a
consequence, a layer of compressed air (blast wave)
forms in front of this gas volume containing most
of the energy released by the explosion. Blast wave
instantaneously increases to a value of pressure
above the ambient atmospheric pressure. This is
referred to as the side-on overpressure that decays
as the shock wave expands outward from the
explosion source. After a short time, the pressure
behind the front may drop below the ambient
pressure (Figure 1). During such a negative phase,
a partial vacuum is created and air is sucked in.
This is also accompanied by high suction winds that
carry the debris for long distances away from the
explosion source". |
  |
It is suggested by many
'experts' that a nuclear
explosion, if it really can take place, generates a blast
wave with pressure of a million bar and a temperature of a
million °C. Such an atomic explosion would evidently
cause more damage than a simple chemical (napalm)
bomb.
Bank
of Japan building 1946 at
Hiroshima -
380 meters sideways from and about 600 meters (1 800
feet) below the alleged 'atomic bomb' explosion and
blast
wave
center 1945!

Downtown
Hiroshima
1946! No 'atomic bomb' exploded and produced a
blast
wave here
1945!
Much more in that link - http://heiwaco.tripod.com/bomb.htm