Help!!

[gunners67]

Hi i was hoping you guys could help explain to me in simple terms what is meant by point light and parallel light there doesnt seem to be much useful info on the net in plain english that i can find.

Many thanks for your help.

Dan

[gunners67]

Is there really no one out there who knows the answer or is it so easy that everyone wants to ignore the idiot with the silly question LOL.

[lputman]

I personally have no clue what they are.

ETA: Is this what you are talking about? http://www.katsbits.com/tutorials/id...techniques.php

[Jim Bryant]

maybe these will clear thing up. what is point light and parallel light - Google Search

[gunners67]

Many thanks for your help

[ravncat]

simple terms -

point light - is a single point of light - think of a star way up high - or what happens when you view a lightbulb from really far away. When you are closer it is too big to be a "point"

Parallel light - is multiple rays of light coming in together, parallel to each other - this only happens when you are far away from something - think of a flashlight - it tries to put its light into a column - but it invariably spreads out. If you are far away from it - the light rays that are still reaching you are pretty much all coming towards you and all parallel to eachother. Lasers emit pretty parallel light.

Parallel light is a pretty common condition for solving "ideal" problems in optics for very simplified things - like properties of a simple lens

[JFSanders]

Is there really no one out there who knows the answer or is it so easy that everyone wants to ignore the idiot with the silly question

DAMN! I had been sitting around all day waiting for some guy to post a question about point light and parallel light and finally couldn't hold my bladder and got up to go to the bathroom, slipped and fell, broke my hip in two places and just got back from the hospital and damned if somebody else answered the very question I had been waiting on all friggin day!@#$ Jeez louize.... Stomps off very tenderly


one legged jim