specific intensity


by astronut
Tags: intensity, specific
astronut
astronut is offline
#1
Sep15-07, 02:42 AM
P: 3
I am having fundamental difficulty in feeling the definition of specific intensity of a radiation field...
questions:
1) Define a radiation field as precisely as possible.
2) Specific intensity defined at a point should remain the same whichever way we choose for the differential surface area..
3) With respect to which point and which area element is the differential solid angle element measured?
4) What do we mean by dE(energy flowing through the unit solid angle)?
(because if the differential solid angle is defined keeping the centre of the area element as centre of the sphere then dE does not make any sense).
i.e. 'energy flowing through a surface' makes sense but
'energy flowing through a solid angle' makes sense only if the source is at the centre.
Phys.Org News Partner Science news on Phys.org
Cougars' diverse diet helped them survive the Pleistocene mass extinction
Cyber risks can cause disruption on scale of 2008 crisis, study says
Mantis shrimp stronger than airplanes
Astronuc
Astronuc is offline
#2
Sep15-07, 08:25 AM
Admin
Astronuc's Avatar
P: 21,637
This may help

http://www.drake.edu/artsci/physics/...ses/a185v3.pdf


Register to reply

Related Discussions
Intensity Introductory Physics Homework 1
Intensity : Log Introductory Physics Homework 1
specific intensity General Astronomy 0
Intensity Introductory Physics Homework 9
What is specific intensity anyway? Introductory Physics Homework 1