Sections View Full Chapter Figures Tables Videos Full Chapter Figures Tables Videos Supplementary Content ++ Table Graphic Jump Location | Download (.pdf) | Print Milliseconds (msec) = 1/1000 of a second Microseconds (μsec) = 1/1,000,000 of a second Nanosecond (nsec) = 1/1,000,000,000 of a second Milliamp (mA) = 1/1000 of an ampere Microamp (μA) = 1/1,000,000 of an ampere Angstrom (Å) = 1/10,000,000,000 of a meter Nanometer (nm) = 1/1,000,000,000 of a meter Hertz (Hz) = 1 cycle per second Kilohertz (KHz) = 1000 cycles per second Megahertz (MHz) = 1,000,000 cycles per second Your MyAccess profile is currently affiliated with '[InstitutionA]' and is in the process of switching affiliations to '[InstitutionB]'. Please click ‘Continue’ to continue the affiliation switch, otherwise click ‘Cancel’ to cancel signing in. Get Free Access Through Your Institution Learn how to see if your library subscribes to McGraw Hill Medical products. Subscribe: Institutional or Individual Sign In Username Error: Please enter User Name Password Error: Please enter Password Forgot Username? Forgot Password? Sign in via OpenAthens Sign in via Shibboleth