Browse Definitions :
Definition

flux

Flux is the presence of a force field in a specified physical medium, or the flow of energy through a surface. In electronics, the term applies to any electrostatic field and any magnetic field . Flux is depicted as "lines" in a plane that contains or intersects electric charge poles or magnetic poles. Three examples of flux lines are shown in the illustration.

Drawing A shows the geometric orientation of the lines of flux in the vicinity of an electrically charged object. The intensity of the field is inversely proportional to the separation between the lines of flux. The flux density , and hence the electrostatic field strength, decreases as the distance from the charged object increases. Electrostatic flux density is inversely proportional to the distance from the charge center.

Drawing B illustrates flux lines surrounding a current-carrying conductor as they appear in a plane perpendicular to the conductor. As with the flux surrounding an electrically charged object, the separation between the flux lines increases as the distance from the conductor increases. Magnetic flux density is inversely proportional to the distance from a current-carrying conductor, as measured in a plane perpendicular to the conductor.

Drawing C shows the general orientation of the lines of flux of an electrostatic field between two oppositely charged poles in a plane containing the centers of both poles. In a magnetic field between opposite poles, the flux lines have the same general shape and orientation, so this drawing also applies to that situation. The flux density is greatest near the poles. The flux density is considerable along and near a line connecting the poles. As the distance from the line connecting the poles increases, the flux density decreases.

Flux lines are intangible; they cannot be seen. But they can be observed indirectly, and they produce demonstrable effects. If you place iron filings on a sheet of paper and place the paper on a magnet so both magnetic poles are near the paper, the filings line up in a pattern resembling illustration C. This demonstration is common in school science classes.

This was last updated in March 2010

Start the conversation

Send me notifications when other members comment.

Please create a username to comment.

-ADS BY GOOGLE

File Extensions and File Formats

Powered by:

SearchCompliance

  • risk management

    Risk management is the process of identifying, assessing and controlling threats to an organization's capital and earnings.

  • compliance as a service (CaaS)

    Compliance as a Service (CaaS) is a cloud service service level agreement (SLA) that specified how a managed service provider (...

  • data protection impact assessment (DPIA)

    A data protection impact assessment (DPIA) is a process designed to help organizations determine how data processing systems, ...

SearchSecurity

  • spyware

    Spyware is a type of malicious software -- or malware -- that is installed on a computing device without the end user's knowledge.

  • application whitelisting

    Application whitelisting is the practice of specifying an index of approved software applications or executable files that are ...

  • botnet

    A botnet is a collection of internet-connected devices, which may include PCs, servers, mobile devices and internet of things ...

SearchHealthIT

SearchDisasterRecovery

  • business continuity plan (BCP)

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

  • disaster recovery team

    A disaster recovery team is a group of individuals focused on planning, implementing, maintaining, auditing and testing an ...

  • cloud insurance

    Cloud insurance is any type of financial or data protection obtained by a cloud service provider. 

SearchStorage

  • DRAM (dynamic random access memory)

    Dynamic random access memory (DRAM) is a type of semiconductor memory that is typically used for the data or program code needed ...

  • RAID 10 (RAID 1+0)

    RAID 10, also known as RAID 1+0, is a RAID configuration that combines disk mirroring and disk striping to protect data.

  • PCIe SSD (PCIe solid-state drive)

    A PCIe SSD (PCIe solid-state drive) is a high-speed expansion card that attaches a computer to its peripherals.

Close