distance
length of straight line that connects two points in a measurable space or in an observable physical space
draft
vertical distance between the waterline and the bottom of the hull (keel)
waterline length
length of a vessel at its nominal waterline
total stopping distance
sum of the reaction distance and the braking distance
excursion
amplitude of linear motion of a speaker cone
pupillary distance
distance between the centers of the pupils of the eyes
circumference
perimeter of a circle or ellipse
air draft
distance from water to the highest point on a vessel or lowest point on a bridge span, etc.
distance from a point to a line
geometry problem
diffraction-limited system
optical system with resolution performance at the instrument's theoretical limit
track gauge
spacing of the rails on a railway track
mean free path
average distance travelled by a moving particle between successive impacts
gear inches
indication of the mechanical advantage of different gears
Q factor
the width between where a bicycle's pedals attach to the cranks
distance travelled
distance on the earth's surface covered by a vehicle or individual
radar horizon
distance at which the radar beam rises enough above the Earth's surface to make detection of a target at low level impossible
far point
the farthest distance an eye can see
visibility
in meteorology, distance at which an object or light can be clearly discerned
maximum range
vehicle range calculated as the maximum distance that can be covered with maximum fuel and at in optimal conditions
range of a projectile
the potential distance a projectile can be hurled by a firearm or cannon
distance between two parallel lines
minimum distance between any two points of the two lines
Hubble radius
characteristic length scale of the observable portion of the universe
mean depth
the average distance between the surface and the bottom in a body of water
axle track
distance across between the wheels of a vehicle
scale height
distance over which a quantity decreases by a factor of e; for a planetary atmosphere, the distance over which pressure drops by that factor
range
distance a vehicle can travel
wheelbase
horizontal distance between the centers of the front and rear wheels
dot pitch
distance between RGB dots (sub-pixels) on a display
sidecar wheel lead
offset between a sidecar axle and rear motorcycle axle
safe driving distance
distance that should be maintained between vehicles so the trailing vehicle can safely stop without hitting the car in front
wavelength
spatial period of the wave; the distance over which the wave's shape repeats; the inverse of the spatial frequency
hyperfocal distance
photography term
flight length
aviation term referring to the distance of a flight
social distance
distance between different groups in society
interval class
distance between unordered pitch classes
geographical distance
distance measured along the surface of the earth
school route
a child's route to school
length
measured dimension of an object in a physical space
as the crow flies
idiom meaning the shortest distance between two points
braking distance
concept in traffic law
great-circle distance
shortest distance between two points along the surface of a sphere
flight zone
area surrounding an animal that if encroached upon by a potential predator or threat, including humans, will cause alarm and escape behavior
flying height
distance between a hard disk's read/write head and the platter
offset
integer indicating the distance (displacement) between the beginning of an array or data structure and a given element or point
line height
distance between the baselines of consecutive lines