Sections View Full Chapter Figures Tables Videos Full Chapter Figures Tables Videos Supplementary Content ++Table Graphic Jump LocationFavorite Table | Download (.pdf) | PrintMilliseconds (msec)=1/1000 of a secondMicroseconds (μsec)=1/1,000,000 of a secondNanosecond (nsec)=1/1,000,000,000 of a secondMilliamp (mA)=1/1000 of an ampereMicroamp (μA)=1/1,000,000 of an ampereAngstrom (Å)=1/10,000,000,000 of a meterNanometer (nm)=1/1,000,000,000 of a meterHertz (Hz)=1 cycle per secondKilohertz (KHz)=1000 cycles per secondMegahertz (MHz)=1,000,000 cycles per second GET ACCESS TO THIS RESOURCE 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 Get Free Access Through Your Institution Contact your institution's library to ask if they subscribe to McGraw-Hill Medical Products. Access My Subscription GET ACCESS TO THIS RESOURCE Subscription Options Pay Per View Timed Access to all of AccessPhysiotherapy 24 Hour $34.95 (USD) Buy Now 48 Hour $54.95 (USD) Buy Now Best Value AccessPhysiotherapy Full Site: One-Year Individual Subscription $595 USD Buy Now View All Subscription Options