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Module - V                                                                          Nuclear Warfare

              Warfare and
                Its Types
                                         Intext Questions         12.2

                                 1.    TREE stands for _________________________

                                 2.    Name any two types of radiations.


                       Note       12.4 Effects of Nuclear Explosion

                                 Understanding the major effects of the nuclear explosion helps us to prepare better if
                                 an attack should occur. The effects of flash, heat, blast and radiation depends on the
                                 size and type of weapon, the weather conditions (sunny or rainy, windy or still); the
                                 terrain and height of explosion. In a nuclear attack, most of the people within a few km
                                 of the explosion will be killed or seriously injured by the blast, heat or initial radiation.
                                 Similarly, all the other natural and manmade structures will be either completely or
                                 almost destroyed. Let us see the effects of Flash, Heat and Blast that occurs from a
                                 nuclear explosion.

                                 12.4.1 Flash Effects

                                 •     Dazzle: The intense flash from a nuclear burst can affect vision at long ranges

                                       due to dazzle and eye damage. Dazzle, (sometimes called 'flash blindness') is a
                                       temporary loss of vision resulting from the brightness of the visible burst. It will
                                       only be of significance to personnel unaffected by other nuclear effects. As a
                                       guide, in daylight only those facing the burst are likely to be dazzled for about
                                       two minutes. At night, dazzle will affect those facing the burst for about 10
                                       minutes and those facing away for about three minutes.
                                 •     Eye Damage: Retinal burns occur when the eye lens focuses the fireball image
                                       on to the retina. Shallow burns heal completely. Deep burns lead to permanent
                                       blind spots. However, sight is not normally lost completely.

                                 12.4.2 Heat or Thermal Effects

                                 Heat is a principal casualty producing effect. It is likely that some 50% of nuclear
                                 weapons casualties will suffer burns: -
                                 (a)   To exposed skin unprotected from the thermal pulse.

                                 (b)   From charred or burnt clothing and/or local fires.
                                 •     Degree of Burns in Personnel :-

                                       •    First Degree-  involve the top layer of skin.
                                       •    Second Degree-  involve the first two layers of skin.
                                       •    Third Degree -   involve all layers of the skin and cause permanent tissue

                                            damage

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