$B:G@hC<$NJ*M}$r9b9;@8$K(B
Saturday Afternoon Physics 2005

$B8EBe%.%j%7%c;~Be$N@N$+$i!"$o$l$o$l?MN`$O!"J*
$B#2#0@$5*$K$J$C$F!"%"%$%s%7%e%?%$%s$NAjBP@-M}O@$d%O%$%<%s%Y%k%0$J$I$NNL;RO@$NJ*M}3X$,H/E8$7$^$7$?!#(B $B$=$l$K$h$C$F!"%_%/%m$J@$3&$X$N$o$l$o$l$NCN8+$,Hs>o$K?<$^$C$F$-$^$7$?!#(B $B$=$N@.2L$O!"%/%)!<%/$d%l%W%H%s$J$I$NAGN3;R$NJ*M}8&5f$H$7$F!"$^$H$^$j!"$5$i$J$k8&5f$,?J$s$G$$$^$9!#(B

$B!!1'ChAO@.=i4|$G$NAGN3;R$H(B
$B!!AGN3;R$N4V$K$O$?$i$/NO$N4X78(B

$B$^$?!":G6a!"$3$N86;R3K$dAGN3;R$N%_%/%m$J@$3&$N8&5f$,!"(B $B$o$l$o$l$N1'Ch$NAO@.$d%S%C%0%P%s$J$I$N1'Ch$N8&5f$H6/$$$D$J$,$j$,$"$k$3$H$,J,$+$C$F$-$^$7$?!#(B $B6KHy$NAGN3;R$N@$3&$N8&5f!"$=$7$F%_%/%m$+$i%^%/%m$J1'Ch$N8&5f$^$G$NN9N)$A$K$D$$$F!"(B $B$*OC$7$7$?$$$H;W$$$^$9!#(B

$B%3!<%R!<%V%l%$%/(B

$B8w$GGA$/86;R$HNL;R$N@$3&!!!J>>B?!!7r:v!"J!ED!!8w=g!K(B

$B!!6u$K$+$+$kFz$G7P83$9$k$h$&$K!";d$?$A$N?H$N$^$o$j$N8w$O(B $B$$$m$s$J?'$N@.J,!J%9%Z%/%H%k!K$+$i@.$j$^$9!#(B $B%W%j%:%`$J$I$rMQ$$$?J,8w7W$r;H$C$F%9%Z%/%H%k$rJ,2r$7$F$_$k$H!"(B $BB@M[$+$i$N8w$OO"B3E*$@$1$l$I!"86;R$NH/8w$d7V8wEt$N8w$N%9%Z%/%H%k$NCf$K$O(B $B$H$S$H$S$N%9%Z%/%H%k$,8+$i$l$^$9!#$3$N;v$O!"NL;RNO3X$NCB@8!&H/E8$N7@5!$K(B $B$J$j!"$^$?!"86;R$NCf$N9=B$$rD4$Y$k

$BD6EAF3$HDc29$NIT;W5D@$3&!!!JKL2,!!NIM:!"L:ED!!=(OB!K(B

1986$BG/!"(BIBM$B%A%e!<%j%C%R$N%Y%I%N%k%D$H%_%e!<%i!<$,(B La-Ba-Cu-O$B%Z%m%V%9%+%$%H7OF<;@2=J*$K$*$$$F!"(B30K$B$ND6EAF3$rH/8+$7$^$7$?!#(B $B$=$N?7$7$$J*0\29EY$N5-O?$O0\29EY$,:G9b5-O?$G$"$j!"(B $B:#$@$=$l$rN?$0D6EAF3BN$O$^$@8+$D$+$C$F$$$^$;$s!#(B $B:G6a!"6bB07O$ND6EAF3$H$7$F$O:G9b$ND6EAF3E>0\29EY(B($BLs(B40K)$B$r(B $B$b$D(BMgB2$B$,H/8+$5$lBg$-$JOCBj$H$J$j!"B?$/$N8&5f$l$N%*%j%8%J%k$J;X?K$r$b$H$KJ*
$B?^#2$O=i$a$F1UBNCbAG29EY(B(77K)$B$rD6$($?9b29D6EAF3BN(BYBa2Cu3O7$B$G$9!#(B $BD6EAF3FCM-$N@-e$K<'@P$,(B $BIb$$$F$$$k$3$H$r<($9





$B$=$NB>!"1UBNCbAG$r;H$C$F6u5$Cf$N;@AG$r1U2=$7$F@-o<'@-!K$rBS$S$F$$$k$?$a!"<'@P$K0z$-4s$;$i$l$^$9!#(B $B$3$N$h$&$JDc29$G8=$l$kIT;W5D$JJ*M}8=>]$r0l=o$K3Z$7$_$J$,$i8+$F$$$-$^$9!#(B

$BIbM7$9$kIT;W5D$J9=B$!!(B-Tensegrity-$B!!!J:#0f!!9nI'!K(B

$B!!%F%s%;%0%j%F%#!<$O!"7zC[2H!&2J3X'$5$l$?$b$N$G$9!#%F%s%;%0%j%F%#!<$O!"?^(B-$B#1$K<($9$h$&$KD%NO:`$N3$$KIb$+$V05=L:`$H;mE*$K7AMF$5$l$k9=B$$G$9!#D%NO$H05=LNO$,D`$j9g$C$F0BDj$J9=B$$r:n$C$F$$$^$9!#$*$h$=7A$"$k$b$N$O!"@8J*!"1'Ch$b4^$a!VD%NO$H05=LNO$N%P%i%s%9!W$H$$$&NO3X86M}$K$h$j@.$jN)$C$F$$$^$9!#(B
$B!!@8J*$G$O!":YK&Fb30$N%?%s%Q%/ $B!!$^$?!"%F%s%;%0%j%F%#!<$O!"$=$N9=B$8zN($NNI$5$+$i7zC[9=B$$d1'Ch9=B$$X$NE,MQ$,@$3&Cf$G8&5f$5$l$F$$$^$9!#(B
$B!!%o!<%/%7%g%C%W$G$O!"7zC[9=B$$X$N
$B!!>\:Y$O!"!!(B $B$3$A$i$X(B

$B?M$K$d$5$7$$%Q%o!<%"%7%9%H%9!<%D!!!JCSED!!2mIW!"9b66!!N<0l!K(B

$B!!?MBN$KAuCe$7!"?M4V$NF0$-$KDI=>$9$kMM$KF0:n$7!"6ZNO$rJd=u$9$kAuCV$G$"$k%Q%o!<%"%7%9%H%9!<%D$O!"J!;c!&2p8n!"%l%9%-%e!
$B!!>\:Y$O!"!!(B $B$3$A$i$X(B

$B%m%1%C%H%(%s%8%s$H?M4V$r;Y1g$9$k%m%\%C%H$N:G@hC