how does the intensity of the light affect the darkness of the shadow?

Subject: how does the intensity of the light affect the darkness of the shadow?

Date: Mon May 29 18:28:00 2006
Posted by No name entered.
Grade level: 10-12 School: No school entered.
City: No city entered. State/Province: No state entered. Country: Singapore
Area of science: Physics
ID: 1148952480.Ph

Message:


I perform a simple experiment by shining a torch on a tennis ball in a dark 
room. The light was dim and the umbra part of the object was not sharp.I asked 
my teacher to confirm if what I observe was correct but she said that the 
intensity of light does not affect the the darkness of the umbra formed by an 
opaque object. Why is there a contradiction? Please enlighten me. Thank you.

Re: how does the intensity of the light affect the darkness of the shadow?

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