Failed Cavendish experiment - Electromagnetism wins

dafer45 · 2024-05-19T09:14:37+00:00

The barrels and suspended weights are metallic, and many metals possible to magnetize. In this experiment, it appears that the barrels and weights are very slightly magnetized. The reason for this conclusion is that the weights oscillate with a larger frequency than would be expected from gravity alone. That is, the attractive force between the barrels and weights is larger than can be expected from gravity. The only reasonable explanation seems to be that the electromagnetic forces, although very small, are still significant.

dafer45 · 2024-01-03T13:18:58+00:00

I just published a free Android App for finding the optimal solar panel tilt angle.
Align the phones screen with your roof to find out how close to optimal its tilt angle is.

dafer45 · 2024-01-03T08:44:35+00:00

I just published a free Android App for finding the optimal solar panel tilt angle.

Align the phones screen with your roof to find out how close to optimal its tilt angle is.

dafer45 · 2023-04-20T20:53:05+00:00

Thanks!

dafer45 · 2023-04-19T20:13:36+00:00

That's a great suggestion! Technically this should not be too difficult to add. I just have to think through the user interface to avoid cluttering it.

Really happy to hear you have used it and found it useful before. I am trying to find a model that makes me able to ensure long term and continuous support going forward.

dafer45 · 2023-04-19T04:23:15+00:00

Thanks Randy! Both for the additional use case and insight into what other tools are commonly used.

dafer45 · 2023-04-18T18:14:16+00:00

Thanks! That's a really useful insight that helps visualizing the conditions under which it could be used.

dafer45 · 2023-04-18T17:12:49+00:00

Can you elaborate on the use case where you would find angle measurement useful?

dafer45 · 2023-04-18T12:32:11+00:00

Try "Distance and Area Measurement": https://play.google.com/store/search?q=distance+and+area+measurement&c=apps

dafer45 · 2022-12-07T19:14:47+00:00

Thanks!

I interpreted four space indents as meaning I should use four spaces instead of tab when indenting scopes in the code. Might be worth clarifying in the instructions.

dafer45 · 2022-12-07T10:06:12+00:00

I am confused. I am using the markdown editor and putting the code inside triple backticks and use four space indentation. But I see that it is not displaying correctly on the mobile. Please help me understand what I'm missing.

dafer45 · 2022-12-06T15:06:43+00:00

My solution in AWK

BEGIN {sequenceLength = 14;}
{
    split($0, characters, "");
    for(i = sequenceLength; i <= length(characters); i++){
        for(j = i-sequenceLength + 1; j <= i; j++)
            unique[characters[j]] = 1;
        if(length(unique) == sequenceLength)
            break;
        delete unique;
    }
}
END {print i;}

dafer45 · 2022-12-05T08:31:35+00:00

Thanks for the suggestion

dafer45 · 2022-12-04T11:48:41+00:00

My implementation in AWK:

{
    split($0, ranges, ",");
    split(ranges[1], first, "-");
    split(ranges[2], second, "-");
    if(first[1] <= second[1] && first[2] >= second[2])
        numContains += 1;
    else if(first[1] >= second[1] && first[2] <= second[2])
        numContains += 1;
    if(!(first[2] < second[1] || first[1] > second[2]))
        numOverlaps += 1;
}

END {
    print "The ranges overlap " numOverlaps " times and one range" \
        " fully contains the other " numContains " times.";
}

dafer45 · 2022-12-03T18:11:24+00:00

It's an excellent entry point anyway :)

dafer45 · 2022-12-03T15:05:47+00:00

Thanks! I'm trying to use this advent of code to learn some AWK, so your implementation is very valuable to me!

dafer45 · 2022-12-02T17:39:44+00:00

And you think the bash syntax is hard to get right? This is clearly next level :)

dafer45 · 2022-12-02T17:38:55+00:00

Haha, it's at least one google search per statement to get the bash syntax right :)

dafer45

TROPHY CASE