Wikipedia Portalsclose

Results 1 - 10 of 8000 for  Wikipedia / Matter / Wikipedia    (3565152 articles)

Matter print that page


For much of the history of the natural sciences people have contemplated the exact nature of matter. The idea that matter was built of discrete building blocks, the so-called particulate theory of matter , was first put forward by the Greek philosophers Leucippus (~490 BC) and Democritus

Degenerate matter print that page

Imagine that a plasma is cooled and compressed repeatedly. Eventually, we will not be able to compress the plasma any further, because the exclusion principle states that two fermions cannot share the same quantum state. When in this state, since there is no extra space for any particles | 2011/6/6 14:35:03

Dark matter print that page


In astronomy and cosmology , dark matter is matter that neither emits nor scatters light or other electromagnetic radiation , and so cannot be directly detected via optical or radio astronomy. [ 1 ] Its existence is inferred from gravitational effects on visible matter and gravitational

Soft matter print that page

Interesting behaviors arise from soft matter in ways that cannot be predicted, or are difficult to predict, directly from its atomic or molecular consituents. This is often because soft matter self-organizes into mesoscopic physical structures that are much larger than the microscopic scale | 2011/7/9 18:45:40

Organic matter print that page

Organic matter is broken down organic matter that comes from plants and animals in the environment . [ 1 ] Organic matter is a collective term, assigned to the realm of all of this broken down organic matter. Basic structures are created from cellulose , tannin , cutin , and lignin , along | 2011/9/1 1:15:41

QCD matter print that page

In the standard model of particle physics, the strong force is described by the theory of quantum chromodynamics (QCD). At ordinary temperatures or densities this force just confines the quarks into composite particles ( hadrons ) of size around 10 −15  m = 1  femtometer = 1 fm (corresponding | 2011/7/30 19:02:13

Strange matter print that page

In particle physics and astrophysics , the term is used in two ways, one broader and the other more specific [ 1 ] [ 2 ] The broader meaning is just quark matter that contains three flavors of quarks: up, down, and strange. In this definition, there is a critical pressure and an associated | 2011/7/18 16:14:45

Phase (matter) print that page


In the physical sciences , a phase is a region of space (a thermodynamic system ), throughout which all physical properties of a material are essentially uniform. [ 1 ] Examples of physical properties include density , index of refraction , and chemical composition. A simple description is

Matter Master print that page


The Matter Master is a DC Comics supervillain and a recurring Hawkman foe. Created by Gardner Fox and Joe Kubert , he first appeared in The Brave and the Bold # 35 (April-May 1961). Contents 1 Fictional character history 2 Powers and abilities 3 Other versions 4 References

Matter creation print that page

Because of momentum conservation laws , the creation of a pair of fermions (matter particles) out of a single photon cannot occur. However, matter creation is allowed by these laws when in the presence of another particle (another photon or other boson, or even a fermion) which can share the | 2011/9/12 15:02:35