Magnetic variation. The difference, east or west, between magnetic north and true north, measured as an angle. Magnetic variation varies in different geographic locations.

A mathematical representation of the frequency or ratio that specific wind speeds occur within a specified time interval.

This designates the resistance of a material to heat conduction. The greater the R-value the larger the number.

Each taxpaying individual in the UK is entitled to an annual exemption of

A filter unit that combines three principles to filter out oil aerosols: 1) Direct interception - A sieving action, 2) Inertial impaction - Collision with filter media fibers, 3) Diffusion -Particles travel in a spiral motion, presenting an effective fron ...

An alloy of lead containing 3 to l5% Sn, used as a hot dip coating for steel sheet or plate. Terne coatings, which are smooth and dull in appearance, give the steel better corrosion resistance and enhance its ability to be formed, soldered, or painted.

This is an independent regulatory agency within the U.S. DOE that has jurisdiction over interstate electricity sales, wholesale electric rates, natural gas pricing, oil pipeline rates, and gas pipeline certification. It also licenses and inspects private, ...

A list of navigational lights arranged in geographical order, giving the position and characteristics.

Either of two colored luminous spots that appear at points 22

That part of an audio-modulated radiosonde consisting of the baroswitch, the sensing elements, the reference elements, and the relay.

The distance the bow of a boat is forward of another's stern

A vessel designed for the transport of people or goods from one place to another on a regular schedule.

The first closing date is one of the milestones in the process by which one company takes over.

An instrument which measures combined direct solar radiation and diffuse sky radiation. See pyrheliometer, Robitzsch actinograph. solarimeter. See also albedometer.

An apparatus consisting of a small, polished, stainless steel cup placed in a container into which is passed the sample gas. The temperature of the polished surface is lowered by immersing dry ice (solid carbon dioxide) in an acetone solution contained in ...

The sovereign power to take property for a necessary public use, with reasonable compensation.

The operation of bringing two lines together; term also applied to other objects.

A tax allowance which takes account of depreciation of certain types of business assets such as.

Thin strips of wood put around the hatches, to keep the tarpaulin down. Also put upon rigging to keep it from chafing. A large batten widened at the end, and put upon rigging, is called a scotchman.