Browse Definitions :
Definition

radiant intensity

WhatIs.com

Radiant intensity is a quantitative expression of the brilliance of a source of electromagnetic (EM) energy over the entire electromagnetic spectrum . This quantity is measured in terms of the power emitted per unit solid angle from an isotropic radiator, a theoretical point source that radiates equally in all directions in three-dimensional space.

The standard unit of radiant intensity is the watt per steradian (W/sr or W ? sr -1 ). For a theoretical point source, 1 W/sr is equivalent to 4 p (approximately 12.5664) W of total radiated power at all wavelengths.

Compare luminous flux . Also see electromagnetic field , watt per steradian , International System of Units ( SI ), and Table of Physical Units .

This was last updated in September 2005

Start the conversation

Send me notifications when other members comment.

Register

Please create a username to comment.

SearchCompliance

  • risk assessment

    Risk assessment is the identification of hazards that could negatively impact an organization's ability to conduct business.

  • PCI DSS (Payment Card Industry Data Security Standard)

    The Payment Card Industry Data Security Standard (PCI DSS) is a widely accepted set of policies and procedures intended to ...

  • risk management

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

SearchSecurity

SearchHealthIT

SearchDisasterRecovery

  • call tree

    A call tree is a layered hierarchical communication model that is used to notify specific individuals of an event and coordinate ...

  • Disaster Recovery as a Service (DRaaS)

    Disaster recovery as a service (DRaaS) is the replication and hosting of physical or virtual servers by a third party to provide ...

  • cloud disaster recovery (cloud DR)

    Cloud disaster recovery (cloud DR) is a combination of strategies and services intended to back up data, applications and other ...

SearchStorage

Close