  min utes , ▁or ▁ 2 8 . 5   year s . ▁ ▁( Co inc ident ally , ▁this ▁is ▁about ▁how ▁long ▁War hol ▁himself ▁was ▁famous ▁before ▁he ▁died ▁in ▁ 1 9 8 7 .) ▁ ▁First ▁used ▁by ▁C ull en ▁Mur phy ▁in ▁ 1 9 9 7 . ▁ ▁Also ▁used ▁simply ▁as ▁meaning ▁ 1 5   min utes ; ▁as ▁the ▁War hol ▁w orm , ▁that ▁could ▁inf ect ▁all ▁vulner able ▁machines ▁on ▁the ▁entire ▁Internet ▁within ▁ 1 5   min utes . ▁ ▁Information ▁flow : ▁Di rac ▁Phys ic ist ▁Paul ▁Di rac ▁was ▁known ▁among ▁his ▁colle agues ▁for ▁his ▁precise ▁yet ▁t ac it urn ▁nature . ▁His ▁colle agues ▁in ▁Cambridge ▁j ok ingly ▁defined ▁a ▁unit ▁of ▁a ▁di rac ▁which ▁was ▁one ▁word ▁per ▁hour . ▁ ▁Ir rit ability : ▁g k B ▁The ▁Swedish ▁video ▁game ▁magazine ▁S ega ▁Force , ▁nr ▁ 1 , ▁ 1 9 9 4 , ▁measured ▁ir rit ation ▁in ▁" gram ▁kn ä cke Br öd ", ▁or ▁gr ams ▁of ▁cr isp b read ▁cr umb s ▁per ▁cm ² ▁in ▁a ▁bed ▁where ▁you ' ve ▁just ▁laid ▁down ▁to ▁sleep . ▁ ▁The ▁S ega ▁Gen esis ▁game ▁T 2 ▁The ▁Movie ▁had ▁an ▁ir rit ation ▁level ▁of ▁ 8 . 6 ▁g k B , ▁which ▁is ▁so ▁high ▁that ▁you ' ll ▁need ▁an ▁o xygen ▁mask