Just a piece of advice I ran into when solving this problem.
The ray exiting through the opening, does not count as a hit.
(It does say this in the question, but I missed it)
Problem 144
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As your posts will be visible to the general public you are requested to be thoughtful in not posting anything that might explicitly give away how to solve a particular problem.
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Don't start begging others to give partial answers to problems
Don't ask for hints how to solve a problem
Don't start a new topic for a problem if there already exists one
See also the topics:
Don't post any spoilers
Comments, questions and clarifications about PE problems.
- RishadanPort
- Posts: 79
- Joined: Mon Jun 10, 2013 7:31 am
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Oofiehatessemicolons
- Posts: 1
- Joined: Thu Feb 25, 2021 12:40 pm
Re: Problem 144
thedoctar wrote: Thu Apr 12, 2012 2:52 pm Could someone please post the first five reflections?
EDIT: My program gets the same results for the 2nd, 9th and 33rd, but my answer isn't correct!!!
(0.006 -10.000)
This is the last point I get, rounded. This point is the 160th-170th point I get, hopefully I'm not giving too much away here. Am I anywhere close?
EDIT*: Just realised the problem, pretty much as soon as I edited this point. Embarrassing! :\
EDIT**: Solved![]()
please tell me what the problem was. I'm in the exact same situation as you and have no idea
Edit: never mind, I also figured it out instantly. Life would be so much easier if they made holes on both sides..
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drassont
- Posts: 2
- Joined: Tue Oct 07, 2025 7:08 pm
Re: Problem 144
I hope this doesn't count as a spoiler but my problem was simply that I'd rescaled the ellipse and forgot to rescale the aperture for the white cell accordingly.
