In comments to yesterday’s post, Andrew G asked:
Speaking of writing, is there an errata list somewhere for “How to teach relativity to your dog“?
No, but there probably should be. I believe there’s an error in one of Maxwell’s equations (an incorrect sign, though you should’ve seen the first typeset version…), but given the length and complexity of the book, there are almost certainly other mistakes. So, if you’ve spotted an error, in physics, grammar, or anything else, leave a comment here, and I’ll compile a list of things to fix if we ever get the chance.
I think there’s a B where there should be an E in the fourth of Maxwell’s equations, as well as an incorrect sign. (Not being a physicist by trade, I didn’t spot the sign error, but the B vs. E mistake makes the equations not match the text description, provoking a “whut?” from my inner mathematician.)
The other error (sort of) that struck me is on p86:
The second sentence contradicts the third, and most of the preceding paragraph, all of which explain that Anson does indeed see a 3m leash and a 1.3m bridge. No-one sees a 3m leash fitting under a 1.3m bridge (Anson sees it not fitting, and the humans see the leash as 2m), but that’s not what it says there.
Good Morning Professor, the last of the Maxwell’s equation on page 34 of “How to teach relativity to your dog” is wrong: on the right hand side, E should appear instead of B, and with a positive sign.