"o "upr""..rt a significant hazard. to living organisms and radiat ion-".rr"itilru eiectronic systenrs. The initiaL (and residual) radiation can be varied within a co.r"iaeranu range for veapons of the same total yield., as is discussed in section 3.1.3, Initial" rad.iation neutrons will furthermore induce sorne radioactivity in the Joir *"o,*a g.or-d-r.".1^ tn" extent of vhich largely depend.s upon the chenical "o.fo"itlon of the soi1. 25' The most inportant quantity for assessing radiation inJury or dsnage is cafled"dosei', which is the amount of- radiation enu.ly rl"orled per unit mass of the absorbing material. Dose revels associateJ ,riitr ',r."iorr" ;"g";"; o;-;;diation injury :1"*i."" and ottrer living organisms are ai"".,"""a in sectiJn 7 oi-ttu-pre"unt 26. I{hen travel_l_ing in the air, radiation wil]. be attenuateal rapidly rith increasing distance fxom.grounar zero. ?hus, the difference betveen distances r,There a lethal dose and a negligible dose of initiar radiation virr be """"i.,r"a is fairly snalf. Generally speaking about l+00 to gOO ,. (0.25_0.1+0 niles) will reduce the dose by a factor of to. _Hence-goo to 1,200 n. io.:_o.A ,fi." i -ri,rii-r-eiuc e i.t ly about a factor of fOO. This distance 'r"i.s--"one*t at vith the yield and the .istance from the veapon, being l-arger ror larger yield .weapons. some dose-d_istance relationships are indicated in-figuie a,l. ---' 27' As the height of burst increases from a tov air b'rst to a high air burst, the s-uount of radiation reaching the _ground rapidry diroinishes. A r- I,{t. bu}st at an artitude of 5 km' (3 mites) would give a negrigitle dose at grounal zero and so vould a 100 kt. burst at an altitude of roughly t*"f.rl te.: nlfesi.---*'* -"-" 28' rn addition to living organisns, electronic conponents co.,1d be quite sensitive Lo initiaf radiation' 'rhile -of der. type equ-LFnent is resistant even to hidh ^^-^^ ro9:."_ large-scare integrated 
**Analysis**
The text appears to be discussing the effects of radiation on living organisms and electronic systems, with specific details about radiation dosage, distance, and altitude. The language used is technical and scientific, suggesting a focus on a specific area of study or research. The text does not mention economic development, agriculture, forestry, or fishing, and it does not seem to be related to employment, humanitarian aid, or culture. It is likely that the text is related to a specific field of study or research, which would fall under the category of Science and Technology.

**Category**
Science and Technology, Health