Breathing is then done through the tube, bypassing the mouth, nose, and throat. A tracheostomy is commonly referred to as a stoma. This is the name for the hole in the neck that the tube passes through.
A millimeter (mm) is the smallest. In order from smallest to largest they rank millimeter, centimeter (cm), decimeter (dm), and meter (m). These are all common units of length in the metric system.
Report Abuse. The unit of measurement of distance in space is the distance that light could travel over a period of one year at the rate of 186000 mile per second. because distances of such immense magnitutude are very long and difficult to write and pronounce in terms of figures ,as tromers have adopted such a scale.ow if your question is how to measure a distance between object just by looking at a light coming from it, it may done by looking at half-life time of photons. Somebody technical at particle physics may give a detail answer on this.