1 Capillary Refill: Push on the tip of the great toe or the nail bed until blanching occurs. 2  Then release and note how long it takes for the red color to return, a reflection of blood inflow to the distal aspect of the lower extremity. Pulses are rated on a scale ranging from 0 (not palpable) to 2+ (normal). 2  As with edema, this is very subjective and it will take you a while to develop a sense of relative values. 3  In the event that the pulse is not palpable, the doppler signal generated is also rated, ranging again from 0 to 2+.
Just how small is ânano?â In the International System of Units, the prefix nano means one-billionth, or 10-9; therefore one nanometer is one-billionth of a meter. The illustration below has three visual examples of the size and the scale of nanotechnology, showing just how small things at the nanoscale actually are.
In this case, we want m to be the remaining unit. distance in m = (distance in nm) x (1 m/109 nm) Note: 1/109 = 10-9. distance in m = (632.1 x 10-9) m. distance in m = 6.321 x 10-7 m. Answer: 632.1 nanometers is equal to 6.321 x 10-7 meters. It's a simple matter to convert meters to nanometers using the same unit conversion.