MadSci Network: Physics
Query:

Subject: Thomas Young's Light Experiment

Date: Wed Jul 21 23:37:09 1999
Posted by Danny
Grade level: undergrad School: No school entered.
City: No city entered. State/Province: No state entered. Country: usa
Area of science: Physics
ID: 932618229.Ph
Message:

I've tried repeating Thomas Young's experiment on multiple 
occasions, but I can't seem to get the same results. What I did 
was lite a candle and hold a note card with two closely adjacent 
slits in it in front of the candle. From that experiment, two 
pencils of light that didn't intersect regardless were created 
on my wall. I then did an experiment in which I placed two 
candles in parallel near a wall and a book between them. The 
area where light from both candles intersected on the wall 
appeared to be uniformly brighter than the areas where they 
didn't intersect. The sunlight that beamed through my blinds had 
the same results. I would think that if interference fringes had 
formed, the area of overlapping would not have been greatly 
brighter to my eye than the non-overlapping areas. Why didn't I 
see interference fringes? And why didn't the light in my first 
experiment diffract then overlap?


Re: Thomas Young's Light Experiment

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