Charles Link's latest activity

To comment more on my post 74 above, I dug out my Kleppner and Kolenkow mechanics textbook from college, and the path neglecting the...

I'd also like to comment on the first photo of post 66. I think what looks like the moon's shadow is simply the earth illuminated by...

The calculation with the moon's gravitational potential does indeed work in the rest frame of the moon. To compute it, we can to a good...

In regards to posts 60 and posts 63 above, I did a calculation assuming the total energy of the rocket stays constant using the...

Cappuccino on Jomtien beach rd.

t too thnk the inclusion of remanance in the discusson is likely not fruitfuil. I do think it important, however, to remember that...

I do think if the nail is a permanent magnet, that the tip will be of one polarity and the head of the other polarity. That would make...

Iron with a low carbon content, is a "soft" magnetic material. The steel used to make nails has high carbon content, which makes it a...

The nail is just a typical steel (ferrous) nail from a shop. Being a soft magnetic material, there would be induced magnetism while...

I presume you are referring to any permanent magnetism, if there is any, appears to be minimal, but why not check for it, like...

After deleting a reference to a LLM conversation, the thread is reopened. Please remember that AI references are not allowed in the...

Just because you have a reasonable sounding explanation does not make it correct. Confounding factors should be tested for and...

I was experimenting with multipolar permanent magnets (concentric alternating-polarity) and a nail and noticed something that initially...

From the response of the nail it is likely it is not permanently magnetized, if that is what you are referring to. It is responding how...

That makes sense. Thanks for that. The image from OP there are three alternating poles, with the two ring magnets and one central disc...