Length-scales S.J.T.U. Phase Transformation and Applications Angstrom=1A=1/10,000,000,000 meter=10-10m Nanometer 10 nm 1/1,000,000,000 meter =10-9m Micrometer 1um 1/1,000,000 meter 10-6 m Millimeter 1mm 1/1,000 meter 10-3 m Interatomic distance a few A A human hair is 50 um Elongated bumps that make up the data track on CD are ~0.5 um wide,minimum 0.83 um long,and 125 nm high SJTU Thermodynamics of Materials Spring2006©X.J.Jin IntroductionPhase Transformation and Applications S. J. T. U. SJTU Thermodynamics of Materials Spring 2006 © X. J. Jin Introduction Angstrom = 1Å = 1/10,000,000,000 meter = 10-10 m Nanometer = 10 nm = 1/1,000,000,000 meter = 10-9 m Micrometer = 1µm = 1/1,000,000 meter = 10-6 m Millimeter = 1mm = 1/1,000 meter = 10-3 m Interatomic distance ~ a few Å A human hair is ~ 50 µm Elongated bumps that make up the data track on CD are ~ 0.5 µm wide, minimum 0.83 µm long, and 125 nm high Length-scales