Toe

Toes are the digits of the foot of a tetrapod. Animal species such as cats that walk on their toes are described as being digitigrade. Humans, and other animals that walk on the soles of their feet, are described as being plantigrade; unguligrade animals are those that walk on hooves at the tips of their toes.

Structure

The toe refers to a part of the human foot, with five toes present on each human foot. Each toe consists of three phalanx bones, the proximal, middle, and distal, with the exception of the big toe (Latin: Hallux). The hallux only contains two phalanx bones, the proximal and distal. The phalanx bones of the toe join to the metatarsal bones of the foot at the interphalangeal joints. Outside the hallux bones is skin, and present on all five toes is a toenail.

The toes are, from medial to lateral:

Fifth

Fifth is the ordinal form of the number five.

Fifth or The Fifth may refer to:

Music

Fifth (unit)

A fifth is a unit of volume formerly used for distilled beverages in the United States, equal to one fifth of a gallon, ⁴⁄₅ quart, or 25³⁄₅ fluid ounces (757 mL); it has been superseded by the metric bottle size of 750 mL, which is the standard capacity of wine bottles world-wide and is approximately 1% smaller.

History

In the late nineteenth century, liquor was often sold in bottles which appeared to hold a quart (32 fl oz) but in fact contained 2, 3, or 4 fluid ounces less than a quart and were called "fifths",short quarts, or commercial quarts.

A quart or one fifth of a gallon was a common legal threshold for the difference between selling by the drink and selling by the bottle or at wholesale, and thus the difference between a drinking saloon or barroom and a dry-goods store.

The fifth was the usual size of bottle for distilled beverages in the United States until 1980. Other authorized units based on the fifth included ⁴⁄₅ pint and ¹⁄₁₀ pint.

During the 1970s, there was a push for metrication of U.S. government standards. In 1975, the Bureau of Alcohol, Tobacco and Firearms, in cooperation with the Distilled Spirits Council of the United States, proposed six metric-standard bottle sizes to take effect in January 1979 and these standards were incorporated into Title 27 of the Code of Federal Regulations. These sizes are 50, 100, 200, 375 (355 for cans), 500 (until June 1989), 750, 1000, and 1750 mL.

Fifth (chord)

In music, the fifth factor of a chord is the note or pitch five scale degrees above the root or tonal center. When the fifth is the bass note, or lowest note, of the expressed chord, the chord is in second inversion  Play .

Conventionally, the fifth is second in importance to the root, with second inversion being the strongest and the fifth perfect in all primary triads (I, IV, V and i, iv, v). In jazz chords and theory however, the fifth is often omitted, or assumed, in preference for the chord quality determining third and chord extensions and additions.

The fifth in a major and minor chord is perfect (G♮ in C). When the fifth of a major chord is raised it is an augmented chord (G♯ in C)  Play . When the fifth of a minor chord is lowered it is a diminished chord (G♭ in C)  Play .

The open fifth and power chord consists of only the root, fifth and their octave doublings.

See also

Sources

Toe (automotive)

In automotive engineering, toe, also known as tracking, is the symmetric angle that each wheel makes with the longitudinal axis of the vehicle, as a function of static geometry, and kinematic and compliant effects. This can be contrasted with steer, which is the antisymmetric angle, i.e. both wheels point to the left or right, in parallel (roughly). Negative toe, or toe out, is the front of the wheel pointing away from the centerline of the vehicle. Positive toe, or toe in, is the front of the wheel pointing towards the centerline of the vehicle. Toe can be measured in linear units, at the front of the tire, or as an angular deflection.

In a rear wheel drive car, increased front toe in provides greater straight-line stability at the cost of some sluggishness of turning response. The wear on the tires is marginally increased as the tires are under slight side slip conditions. On front wheel drive cars, the situation is more complex.

Toe is always adjustable in production automobiles, even though caster angle and camber angle are often not adjustable. Maintenance of front end alignment, which used to involve all three adjustments, currently involves only setting the toe; in most cases, even for a car in which caster or camber are adjustable, only the toe will need adjustment. One related concept is that the proper toe for straight line travel of a vehicle will not be correct while turning, since the inside wheel must travel around a smaller radius than the outside wheel; to compensate for this, the steering linkage typically conforms more or less to Ackermann steering geometry, modified to suit the characteristics of the individual vehicle.

Sensitometry

Sensitometry is the scientific study of light-sensitive materials, especially photographic film. The study has its origins in the work by Ferdinand Hurter and Vero Charles Driffield (circa 1876) with early black-and-white emulsions. They determined how the density of silver produced varied with the amount of light received, and the method and time of development.

Details

Plots of film density (log of opacity) versus the log of exposure are called characteristic curves,Hurter–Driffield curves,H–D curves,HD curves,H & D curves,D–logE curves, or D–logH curves. The overall shape is a bit like an "S" slanted so that its base and top are horizontal. There is usually a central region of the HD curve which approximates to a straight line, called the "linear" or "straight-line" portion; the slope of this region is called the gamma. The low end is called the "toe", and at the top, the curve rounds over to form the "shoulder".

Different commercial film materials cover a gamma range from about 0.5 to about 5. Often it is not the original film that one views but a second or later generation. In these cases the end-to-end gamma is approximately the product of the separate gammas. Photographic paper prints have end-to-end gammas generally somewhat over 1. Projection transparencies for dark surround viewing have end-to-end gamma approximately 1.5. A full set of HD curves for a film shows how these vary with developer type and time.

Toe (disambiguation)

A toe is a digit of the foot of a human or animal.

Toe or TOE may also refer to:

Music

People

Acronyms