Sections View Full Chapter Figures Tables Videos Annotate 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 Access profile is currently affiliated with [InstitutionA] and is in the process of switching affiliations to [InstitutionB]. Please select how you would like to proceed. Keep the current affiliation with [InstitutionA] and continue with the Access profile sign in process Switch affiliation to [InstitutionB] and continue with the Access profile sign in process 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 Error: Incorrect UserName or Password Username Error: Please enter User Name Password Error: Please enter Password Sign in Forgot Password? Forgot Username? Download the Access App: iOS | Android Sign in via OpenAthens Sign in via Shibboleth You already have access! Please proceed to your institution's subscription. Create a free profile for additional features.