Search results
Results from the WOW.Com Content Network
Haidinger fringes are fringes localized at infinity. Also known as fringes of equal inclination, these fringes result when light from an extended source falls on a thin film made of an optically denser medium. These fringes indicate the positions where light interferes, emerging from the medium at an equal angle. [1]
Haidinger's brush, more commonly known as Haidinger's brushes is an image produced by the eye, an entoptic phenomenon, first described by Austrian physicist Wilhelm Karl von Haidinger in 1844. Haidinger saw it when he looked through various minerals that polarized light. [1] [2] Many people are able to perceive polarization of light. [3]
Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Donate; Pages for logged out editors learn more
Diagram of flower parts. In botany, floral morphology is the study of the diversity of forms and structures presented by the flower, which, by definition, is a branch of limited growth that bears the modified leaves responsible for reproduction and protection of the gametes, called floral pieces.
The fossil history of flowering plants records the development of flowers and other distinctive structures of the angiosperms, now the dominant group of plants on land.The history is controversial as flowering plants appear in great diversity in the Cretaceous, with scanty and debatable records before that, creating a puzzle for evolutionary biologists that Charles Darwin named an "abominable ...
In botanical terminology, a phyllary, also known an involucral bract or tegule, is a single bract of the involucre of a composite flower. [1] [2] [3] The involucre is the grouping of bracts together. Phyllaries are reduced leaf-like structures that form one or more whorls immediately below a flower head. [1]
The Ericaceae (/ ˌ ɛr ɪ ˈ k eɪ s i. aɪ,-iː /) are a family of flowering plants, commonly known as the heath or heather family, found most commonly in acidic and infertile growing conditions. The family is large, with about 4,250 known species spread across 124 genera, [2] making it the 14th most species-rich family of flowering plants. [3]
Then in 1980 botanist D.Y.Hong published Wulfeniopsis which is a genus of flowering plants belonging to the family Plantaginaceae, it also honor's Franz Xaver von Wulfen. [6] Also, he is commemorated in about 22 plants with the specific epithet of wulfenii . such as Dianthus wulfenii F.Dietr. and Rosa wulfenii Tratt.