A unit of pressure used with vacuum pumps, equal to 1mm of mercury and 133.32 Pascal's.

An early and once universal name for the mercury barometer.

A twisting deformation of a solid body about an axis in which lines that were initially parallel to the axis become helices.

A hygrometer in which the rotation of the hygrometric element is a function of humidity.

The shear stress on a transverse cross section resulting from u twisting action.

Thames Oil Spill Cleaning Association

To throw an oar out of the rowlock, and raise it perpendicularly on its end, and lay it down in the boat, with its blade forward.

Total Loss

The measure of closeness in shape between a waveform and it's fundamental component.

The sum of the sensible and latent heat in a substance or fluid above a base point, usually 32 degrees Fahrenheit.

The total radiation incident on a specific surface area over a time interval.

The trapping of light by refraction and reflection at critical angles inside a semiconductor device so that it cannot escape the device and must be eventually absorbed by the semiconductor.

The upward force produced by the gas in a balloon. It is equal to the free lift plus the weight of the balloon and the attached equipment.

The total electrical power input to a compressor, including drive motor, cooling fan, motors, controls, etc.

The sum of solar and terrestrial radiation.

An anemometer in which the sensor rotation is transmitted to a mechanical counter which directly integrates the air movement past the sensor. Used to determine total air passage (wind run). Average wind speed can be calculated from the difference between ...

To touch the ground, with the keel, for a minute or so and then proceed again.

The ability of a metal to absorb energy and deform plastically before fracturing.

Total Observed Volume

To pull a boat with another boat, such as a tugboat towing a barge. When used as a noun, it refers to the vessel being towed.