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    I Photon detectors in a double slit experiment

    I suspect that the double slit experiment is a thought experiment. I seriously doubt if anyone has ever done the experiment in reality. But I could be wrong. Has anyone ever done it? If so then where were the results published?
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    I Space elevator and Coriolis force

    It seems to me that the concept of a space elevator does not take Coriolis force into account. If the elevator were in built with a space station in geosynchronous orbit and counterweight then there is more to reaching the space station than just climbing the rope. The rope would have to be...
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    Other Is something wrong with this textbook? (Halliday & Resnick with later pages missing?)

    I have a copy of Fundamentals of Physics by Halliday, Resnick and Walker. The book has 952 pages plus appendices. There are many entries in the index which point to pages beyond 952. For example if I look up "dark matter" it points to page 1136. There's no such page. I don't know what's...
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    B Why were Newton's laws of motion discovered so late?

    He also developed a great interest in religion. He calculated that Jesus Christ would return in 2060.
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    B Why were Newton's laws of motion discovered so late?

    Some speculate that he was autistic.
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    I Calibration of weight sets

    Thanks for your input. I have been quite busy lately, partly due to Christmas, and have not found time to do very much with the problem. But I will get to it ASAP. You've given me some new ideas.
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    I Calibration of weight sets

    Many years ago I was given a problem involving the calibration of sets of weights. Each of two sets consisted of weights of 1.0 kg, 500.0 g, 300 g, 200 g, and 100 g. The two 1.0 kg weights were calibrated by the international agency in France and I was permitted to assume that their masses...
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    Electric cars -- Does periodic coasting help efficiency?

    If power from the engine ceases then the car will not "keep moving because of inertia" and then start losing speed. It will start decelerating immediately. I seriously doubt that providing power in a series of pulses would be beneficial. I think it more likely that such a system would be less...
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    Curious effect in Command Prompt "Type" command

    I create a text file using notepad or any other text editor or word processor. There is a hyphen in the file. If I then display that file using the TYPE command in the Command Prompt then that hyphen gets replaced with a lower case u with a GRAVE symbol over it. What's going on? No big deal...
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    What are some of your favorite Sci Fi short stories?

    The Available Data on the Warp Reaction by Lion Miller
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    A Basic program -- missing array index?

    That works. Thanks all.
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    A Question about the age of the universe

    I want to thank all the responders. I see the flaw in my logic now.
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    A Basic program -- missing array index?

    I want to thank everyone for their input. This is the start of the program. I think the Dim statements are the only declarations. 10 B$ = Chr$(7) Dim CL(20), CW(20), ES(20), FR(20), LS(20), RS(20), SP(20), XX(20), Z1(20), Z2(20), Z3(20), Z5(20), Z6(20), Z7(20) Dim CM(20), CN(20)...
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    A Basic program -- missing array index?

    It's a surname. It's Scottish believe it or not.
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    A Basic program -- missing array index?

    posex.bas(97) error 72: Array access, index expected, before '=' If S = 999 Or FS = 999 Then GoTo 840 ^
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    Best Book to learn C

    Read this. Mostly about C++, there's a chapter on C. Read How Not to Program in C++: 111 Broken Programs and 3 Working Ones, or Why Does 2+2=5986 by Steve Oualline. https://www.amazon.com/dp/1886411956/?tag=pfamazon01-20&tag=pfamazon01-20 There's also The C Puzzle Book...
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    A Basic program -- missing array index?

    If someone can help me with this I'd be grateful. I've asked this question on other forums, gotten lots of views but no answer. It's no big deal but maybe someone has a solution. I've have a program written in BASIC. I did not write the program and I have no way to contact the original...
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    A Question about the age of the universe

    Hello. This is my first post here. I have a question about the age of the universe that has been on my mind for the last few weeks. I have just read the posting guidelines and wish to state before I begin that I do not intend this as a challenge to mainstream theory but as an attempt to...
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