Home > Industry/Domain > Household appliances

Household appliances

Any device found in the home designed for a specific function, especially electric devices such as toasters or refrigerators.

0Categories 15065Terms

Add a new term

Contributors in Household appliances

Household appliances >

Lens blank

Eyewear; Optometry

Piece of material, usually preformed, for the making of a lens at any stage before completion of the surfacing processes.

Horizontal centre line

Eyewear; Optometry

Line located at equal distance from the two horizontal tangents of the boxing system.

Infrared radiation

Eyewear; Optometry

Optical radiation with a wavelength longer than that of visible radiation.

Illuminated magnifier

Eyewear; Optometry

Magnifier incorporating illumination.

Focal length

Eyewear; Optometry

Distance in an optical system from the focal point to the corresponding principal point, measured along the optical axis (axis of symmetry).

Fixed-location stimulus perimeter

Eyewear; Optometry

Perimeter which utilises test stimuli that are at permanent locations on the background.

Fixation target

Eyewear; Optometry

Target used to locate the point where the patient should look during testing.

Sub-categories