The sequence of numbers in which each number is the sum of the two preceding numbers..

The relationship between two numbers in the fibonacci sequence. The sequence for the first three.

A law of chemistry and physics: the rate of diffusion of one substance in another is proportional to the negative gradient of the concentration of the first substance.

Wash trading, bucketing, cross trading, or other types of trade to give the appearance of trading.

A block of wood or iron, placed through the hole in the heel of a mast, and resting on the trestle-trees of the mast below. This supports the mast. Also, a wooden pin, tapered, used in splicing large ropes, in opening eyes, etc.

A small rail on tables and counters used to keep objects from sliding off when the vessel rolls and pitches.

A double block where the two sheaves lie in a plane one below the other, rather than alongside each other.

A sailor's paradise where amusements were plentiful, and the women were accommodating.

A partially raised deck over the engine and boiler rooms, always around the smokestack, to let the hot air and fumes escape.

Small hatch in the fidley deck around the stack and uptakes. Generally closed by grating and steel covers.

A point (or line) on a scale used for reference or comparison purposes. In calibration of meteorological thermometers, for example, the fiducial points are 100

That temperature at which, in a specified latitude, the reading of a particular barometer requires no temperature or latitude correction.

A person entrusted to manage the assets and interests of another. For example, an executor in a.

A day for general ship cleaning.

The officially designated elevation of an airport above mean sea level, taken as the highest point on any of the runways of the airport. Same as airport elevation.

Ice pack whose limits cannot be seen from ship.

A rail around the mast or on the bulwarks with holes for belaying pins to which lines or halyards are attached.

The semi-circular steel coupling device mounted on a tractor which engages and locks with a chassis semi-trailer.

An ornamental carved and painted figure on the stem of the vessel.

A coil of tungsten wire suspended in a vacuum or inert gas-filled bulb. When heated by electricity the tungsten "filament" glows.