Frustum vs Null - What's the difference?
frustum | null |
A cone or pyramid whose tip has been truncated by a plane parallel to its base.
* 1742 , Colin MacLaurin, A Treatise of Fluxions , Volume 1,
* 1809', '''''Frustum'' , entry in William Nicholson, ''The British Encyclopedia , Volume 3,
* 2006', Pawan Harish Nirnimesh, P. J. Narayanan, ''Culling an Object Hierarchy to a '''Frustum Hierarchy'', Prem Kalra, Shmuel Peleg (editors), ''Computer Vision, Graphics and Image Processing: 5th Indian Conference, ICVGIP 2006 , Springer, LNCS4338,
* 2008 , R. Benjamin Davis, Techniques to Assess Acoustic-structure Interaction in Liquid Rocket Engines ,
A portion of a sphere delimited by two parallel planes.
* 1840 , James Blundell, Observations on Some of the More Important Diseases of Women ,
* 2014 , John Bird, Engineering Mathematics ,
----
A non-existent or empty value or set of values.
Zero]] quantity of [[expression, expressions; nothing.
Something that has no force or meaning.
(computing) the ASCII or Unicode character (), represented by a zero value, that indicates no character and is sometimes used as a string terminator.
(computing) the attribute of an entity that has no valid value.
One of the beads in nulled work.
(statistics) null hypothesis
Having no validity, "null and void"
insignificant
* 1924 , Marcel Proust, Within a Budding Grove :
absent or non-existent
(mathematics) of the null set
(mathematics) of or comprising a value of precisely zero
(genetics, of a mutation) causing a complete loss of gene function, amorphic.
As nouns the difference between frustum and null
is that frustum is a cone or pyramid whose tip has been truncated by a plane parallel to its base while null is a non-existent or empty value or set of values.As an adjective null is
having no validity, "null and void".As a verb null is
to nullify; to annul.frustum
English
(wikipedia frustum) (Spherical segment)Noun
(en-noun)page 25,
- In a parabolic conoid this difference vani?hes, the fru?tum' being always equal to a cylinder of the ?ame height upon the ?ection of the conoid that bi?ects the altitude of the ' fru?tum and is parallel to its ba?es.
unnumbered page,
- This theorem holds good for complete solids as well as frustums , whether right or oblique.
page 252,
- However, when there are multiple view frustums (as in a tiled display wall), visibility culling time becomes substantial and cannot be hidden by pipelining it with other stages of rendering.
page 122,
- Here, the dynamics of the fluid-filled frusta' of cones are considered (see Figure 5.5). The ' frusta are clamped at their roots and free at their ends.
page 131,
- In some women it[the os uteri] is flat, in many more tuberose, and forming, as it were, a frustum of a sphere;.
page 183,
- Problem 22.' Determine the volume of a '''frustum''' of a sphere of diameter 49.74 cm if the diameter(sic) of the ends of the '''frustum''' are 24.0 and 40.0 cm, and the height of the ' frustum is 7.00 cm.
Usage notes
The misspelling frustrum is by incorrect analogy with frustrate, also of Latin origin. * (portion of a sphere) The portion of the surface of a sphere delimited by parallel planes (i.e., the curved surface of a frustum) may be called a zone; however, that term is also sometimes used as a synonym of frustum .Derived terms
* frustum culling * view frustum * viewing frustumReferences
null
English
Noun
(en noun)- (Francis Bacon)
- Since no date of birth was entered for the patient, his age is null .
Adjective
(en adjective)- In proportion as we descend the social scale our snobbishness fastens on to mere nothings which are perhaps no more null than the distinctions observed by the aristocracy, but, being more obscure, more peculiar to the individual, take us more by surprise.