Question

explain characteristic of matter

Answer 1

Answer:

okkk. wait i can

Explanation:

The concept of matter is further complicated by quantum mechanics, whose roots go back to Max Planck’s explanation in 1900 of the properties of electromagnetic radiation emitted by a hot body. In the quantum view, elementary particles behave both like tiny balls and like waves that spread out in space—a seeming paradox that has yet to be fully resolved. Additional complexity in the meaning of matter comes from astronomical observations that began in the 1930s and that show that a large fraction of the universe consists of “dark matter.” This invisible material does not affect light and can be detected only through its gravitational effects. Its detailed nature has yet to be determined.

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On the other hand, through the contemporary search for a unified field theory, which would place three of the four types of interactions between elementary particles (the strong force, the weak force, and the electromagnetic force, excluding only gravity) within a single conceptual framework, physicists may be on the verge of explaining the origin of mass. Although a fully satisfactory grand unified theory (GUT) has yet to be derived, one component, the electroweak theory of Sheldon Glashow, Abdus Salam, and Steven Weinberg (who shared the 1979 Nobel Prize for Physics for this work) predicted that an elementary subatomic particle known as the Higgs boson imparts mass to all known elementary particles. After years of experiments using the most powerful particle accelerators available, scientists finally announced in 2012 the likely discovery of the Higgs boson.

For detailed treatments of the properties, states, and behaviour of bulk matter, see solid, liquid, and gas as well as specific forms and types such as crystal and metal.

The Editors of Encyclopaedia Britannica

This article was most recently revised and updated by Adam Augustyn, Managing Editor, Reference Content.

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Envelope

SOUND

WRITTEN BY: The Editors of Encyclopaedia Britannica

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Envelope, in musical sound, the attack, sustain, and decay of a sound. Attack transients consist of changes occurring before the sound reaches its steady-state intensity. Sustain refers to the steady state of a sound at its maximum intensity, and decay is the rate at which it fades to silence. In the context of electronically synthesized sound, the term decay is sometimes used to refer to a drop in intensity that may occur between the attack and the sustain phase, and in such cases the time it takes for the sound to fade to silence is called the release.

Envelope

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Timbre

Envelope, the combination of the three components of a dynamic musical tone, is an important element of timbre, the distinctive quality, or tone colour, of a sound. Every musical instrument has its characteristic attack, sustain, and decay pattern. Attack transients are very complex and difficult to characterize because of the speed with which the character of a sound changes in its first few milliseconds, and they have been the subject of research into exactly how they affect the tone quality of musical