http://www.springerlink.com/content/a746841n2267002q/
I measured the thickness of the paper using a micrometre.
The thinnest layer to the thickest layer can be written as a fraction as follows: 1/thickest layer thickness.
Paper thickness is measured in reams (quantity) and calipers (thickness). Reams refer to the quantity of paper, often equal to 500 sheets, while calipers measure the thickness of a single sheet of paper.
Examples of things that can be measured in millimeters include the thickness of paper, the diameter of small screws, the width of a pencil lead, and the length of small electronic components.
The thickness of an object refers to the distance between its two parallel surfaces. It is typically measured in units such as millimeters, centimeters, or inches. The thickness of an object can vary depending on its material and intended use.
The critical layer thickness is the minimum thickness of a strained layer needed to prevent dislocations from forming at the interface between the layer and the substrate. It is an important consideration in semiconductor device fabrication and thin film growth, as exceeding this thickness can lead to defects and degrade the performance of the material.
The thickness of the depletion region or depletion layer (and there are other terms) varies as the design of the semiconductor. The layers in a semiconductor are "grown" (usually by deposition), and this can be controlled. The typical depletion region thickness in an "average" junction diode is about a micron, or 10-6 meters. Junction "construction" presents major engineering considerations to those who design and make semiconductors as there are many different kinds. A link is provided to the section on the width of depletion regions in the Wikipedia article on that topic.
An ultrasonic thickness gauge outputs ultrasonic waves which are reflected off a base surface. The resistance caused by the "coating layer" is measured by the magnitude of the returned waves. This resistance is used to determine a thickness measurement.
An instrument called micrometer is used to measure paper or card thickness.
All distances are measured in metres. Prefifixes are used as abbreviations for the fraction of metres, because paint is thin, it would be measured in millionths of a metre. The prefix for millionths is micro-, so paint thinckness would be quoted as micrometres (μm)
In typesetting, the thickness of a line is called its weight and is measured in points.
In a semiconductor, the charge concentrates at the bounds of the space charge region(depletion layer).
The fraction is(thickness of the thinnest layer)/(thickness of the thickest layer) After you write that fraction, you can simplify it if you feel like it.
That would be measured in millimetres.
3/16" thick is the minimum thickness Sagiita that can be measured by means of spherometer.
The ratio of thermal boundary layer thickness to the concentration boundary layer thickness is typically denoted as Prandtl Schmidt number (PrSc). It is defined as the ratio of thermal diffusivity to mass diffusivity of a fluid and represents the relative thicknesses of the thermal and concentration boundary layers in a flow field.
A "Layer" is a flat covering or thickness