- heterogeneous ray
- noun
: a vascular ray consisting of both upright and procumbent cells — compare homogeneous ray
Useful english dictionary. 2012.
heterogeneous ray
Look at other dictionaries:
Ray tracing (physics) — In physics, ray tracing is a method for calculating the path of waves or particles through a system with regions of varying propagation velocity, absorption characteristics, and reflecting surfaces. Under these circumstances, wavefronts may bend … Wikipedia
homogeneous ray — noun : a vascular ray consisting of only upright or only procumbent cells compare heterogeneous ray … Useful english dictionary
X-ray scattering techniques — are a family of non destructive analytical techniques which reveal information about the crystallographic structure, chemical composition, and physical properties of materials and thin films. These techniques are based on observing the scattered… … Wikipedia
x-ray spectrum — the spectrum of a heterogeneous beam of x rays produced by a suitable grating, generally a crystal … Medical dictionary
protein — proteinaceous /proh tee nay sheuhs, tee i nay /, proteinic, proteinous, adj. /proh teen, tee in/, n. 1. Biochem. any of numerous, highly varied organic molecules constituting a large portion of the mass of every life form and necessary in the… … Universalium
John Meurig Thomas — Sir John Meurig Thomas FRS (born December 15, 1932), is a leading British chemist and educator primarily known for his work on heterogeneous catalysis, solid state chemistry, and surface and materials science. He has authored over one thousand… … Wikipedia
Список награждённых Национальной медалью науки США — Джошуа Ледерберг (справа) получает Национальную медаль науки из рук Президента США Джорджа Буша старшего Список … Википедия
catalysis — catalytic /kat l it ik/, adj., n. catalytical, adj. catalytically, adv. /keuh tal euh sis/, n., pl. catalyses / seez /. 1. Chem. the causing or accelerating of a chemical change by the addition of a catalyst. 2. an action between two or more… … Universalium
surface analysis — ▪ chemistry Introduction in analytical chemistry (chemistry), the study of that part of a solid that is in contact with a gas or a vacuum. When two phases of matter are in contact, they form an interface. The term surface is usually… … Universalium
Cluster chemistry — In chemistry, a cluster is an ensemble of bound atoms intermediate in size between a molecule and a bulk solid. Clusters exist of diverse stoichiometries and nuclearities. For example, carbon and boron atoms form fullerene and borane clusters,… … Wikipedia
