Browse Definitions:
Definition

strange matter

Strange matter is matter consisting of atom s whose nuclei contain pairs of particles called strange quark s. Quarks are believed to be elementary particles, in the sense that they cannot be broken down into smaller components. There are several types of quarks, with exotic names such as up quark, down quark, and strange quark. These names were invented to differentiate among quarks with various characteristics.

An atom of normal matter has a nucleus consisting of one or more proton s, and, with the exception of ordinary hydrogen, one or more neutron s. Protons and neutrons are made up of up quarks and down quarks in certain combinations. Strange matter, however, has nuclei that also contain strange quarks. This makes strange matter different from matter in the everyday sense. One of the notable characteristics of strange matter is its extreme density. A fragment of strange matter the size of a biological cell would have a mass of hundreds of kilogram s.

Scientists have produced atoms of strange matter in the laboratory, using a machine called a particle accelerator or atom smasher. Some astronomers believe that strange matter exists in interstellar and intergalactic space, particularly in dense objects such as stars that have spent all their atomic fuel and collapsed under the influence of their own gravitation. Such stars are optically invisible because they have stopped shining.

If the universe contains many objects made up of strange matter, then there is far more mass in the cosmos than calculations based on visual observations suggest. If the existence of strange matter in large quantities can be proven, the fact could have a profound effect on theories concerning whether or not the universe is dense enough to eventually collapse under its own gravitation.

This was last updated in September 2005

Join the conversation

2 comments

Send me notifications when other members comment.

By submitting you agree to receive email from TechTarget and its partners. If you reside outside of the United States, you consent to having your personal data transferred to and processed in the United States. Privacy

Please create a username to comment.

Hi.

Im an particle-astrophysicist and would like to submit a comment about strange matter (or rather 'strange quark matter' which is the correct term). As the correct term implies, strange quark matter does not consist of nuclei or atoms, but just of quarks bound together in one whole mega-system. Introducing atoms and nuclei is an unnescessary and incorrect way of describing its structure. Strange quark matter behaves like one big atom or nuclei all in itself. Where ordinary nuclei consists of several hadrons (protons and neutrons), each one made up of 3 quarks, strange quark matter consists of a huge amount of quarks bound together in one large mega-system. If this system contains strange quarks it is called 'strange' quark matter. If not, it is simply called quark matter. In fact the phenomenae is easier to grasp than presented here.
Cancel
Hi.

I have more comments, and to make my point clearer I present it here as a seperate post.

The objects that /with very high certainty) contains quark matter is neutron stars. What is more uncertain is if this quark matter would be strange quark matter or just ordinary quark matter and is is still heavily investigated if this hypothetical strange quark matter would be stable in itself in free space outside the extreme environment of a neutron star. Ie if sqm (strange quark matter) could even exist in interstellar space at all or if it would instantly decay.

Wether or not sqm exists or is stable in free space it has not a great influence on what we describe as dark matter. So the last part of the article is unnecessary and in fact wrong. In fact the material of which dense objects (or rather 'compact objects' which is the correct term) is composed does not contribute to the dark matter in the Universe either. Whatever the dark matter in this Universe is, it is not composed of sqm, qm or compact objects. It will be too big a bite to go into the details of dark matter here, but wikipedia is a very good source of information on this highly interesting and lively subject.

Thnak you for your time and attention...
Lasse Nordal Enevoldsen
Master of Science
Cancel

-ADS BY GOOGLE

File Extensions and File Formats

Powered by:

SearchCompliance

SearchSecurity

  • black hat

    Black hat refers to a hacker who breaks into a computer system or network with malicious intent.

  • copyright

    Copyright is a legal term describing ownership of control of the rights to the use and distribution of certain works of creative ...

  • keylogger (keystroke logger or system monitor)

    A keylogger, sometimes called a keystroke logger or system monitor, is a type of surveillance technology used to monitor and ...

SearchHealthIT

  • population health management (PHM)

    Population health management (PHM) is a discipline within the healthcare industry that studies and facilitates care delivery ...

  • ICD-10-PCS

    The International Classification of Diseases, 10th Revision, Procedure Coding System (ICD-10-PCS) is a U.S. cataloging system for...

  • U.S. National Library of Medicine (NLM)

    The U.S. National Library of Medicine (NLM) is the largest biomedical library in the world.

SearchDisasterRecovery

  • business continuity plan (BCP)

    A business continuity plan (BCP) is a document that consists of the critical information an organization needs to continue ...

  • call tree

    A call tree -- sometimes referred to as a phone tree -- is a telecommunications chain for notifying specific individuals of an ...

  • mass notification system (MNS)

    A mass notification system is a platform that sends one-way messages to inform employees and the public of an emergency.

SearchStorage

  • hybrid hard drive (HHD)

    A hybrid hard drive (HHD), sometimes known as a solid-state hybrid drive (SSHD), is a mass storage device that combines a ...

  • USB flash drive

    A USB flash drive -- also known as a stick, thumb or pen drive -- is a plug-and-play portable storage device that uses flash ...

  • open source storage

    Open source storage is data storage software developed in a public, collaborative manner that permits the free use, distribution ...

SearchSolidStateStorage

  • RRAM or ReRAM (resistive RAM)

    RRAM or ReRAM (resistive random access memory) is a form of nonvolatile storage that operates by changing the resistance of a ...

  • JEDEC

    JEDEC is a global industry group that develops open standards for microelectronics.

  • M.2 SSD

    An M.2 SSD is a solid-state drive (SSD) that conforms to a computer industry specification written for internally mounted storage...

SearchCloudStorage

  • RESTful API

    A RESTful application program interface breaks down a transaction to create a series of small modules, each of which addresses an...

  • cloud storage infrastructure

    Cloud storage infrastructure is the hardware and software framework that supports the computing requirements of a private or ...

  • Zadara VPSA and ZIOS

    Zadara Storage provides block, file or object storage with varying levels of compute and capacity through its ZIOS and VPSA ...

Close