Tables 80, 81 



ELASTIC MODULI. 



TABLE 80. —Variation ol the Rigidity of Metals with Temperature.* 



The modulus of rigidity at temperature t is given by the equation h, = «„ ( i -f o/ -p ^^- + V''). 



TABLE 81. — Ratio p of Transverse Contraction to Longitudinal Extension under Tensile Stress 



(Polsson's Ratio). 



• According to the experiments of Kulilrausch and Loomis (Pogg. Ann. vol. i.)i),and uf Pisati (N. Cim.(3) vols. 4, 5). 

 Smithsonian Tables. 



76 



