INDEX. 



301 



Water {coutimied). 



thermal conductivity of tyS 



viscosity of 1 36 



Wave-lengtiis of Fraunhofcr lines 175 



standard for arc and solar spectrum. ... 172 



Wciglits and measures — 



British Imperial to Metric 7, 8 



Metric to British Imperial 5, 6 



Metric to United States 10 



United States to Metric 9 



Weights of sheet metal S^- 57 



Weights of wires 44-54 



Wind, pressure of loS 



Wire, gauges '^-^l 



Woods, densities of 88 



Work, conversion factors for 20, 21 



Yard, definition of xvi 



Young's moduli 75 



modulus, definition of 75 



Zonal harmonics 40 



