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A comment on NASA engineer's 'helical engine' may violate the laws of physics. Parent comment

Re:NASA engineer's 'helical engine' may violate the laws of ... by semajian on Monday October 14, 2019 @11:52PM (#21255404)
I've never come across a physicist who used the term "inertia" to refer to any of the common relativistic quantities.
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Re:NASA engineer's 'helical engine' may violate the laws of ... by whatshisface on Tuesday October 15, 2019 @10:01AM (#21258400)
I used the word "inertia" to refer to the various inertia-related things that are used in mechanics. For example, the mass tensor that appears in curvilinear coordinate systems. This class of inertia-related things are usually given a name involving the word mass, and they are not usually Lorentz invariant.
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[dead]
Re:NASA engineer's 'helical engine' may violate the laws of ... by dang on Tuesday October 15, 2019 @05:05PM (#21263755)
We've banned this account for repeatedly breaking the site guidelines. If you don't want to be banned, you're welcome to email [email protected] and give us reason to believe that you'll follow the rules in the future.

https://news.ycombinator.com/newsguidelines.html

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Re:NASA engineer's 'helical engine' may violate the laws of ... by seanhunter on Tuesday October 15, 2019 @06:30AM (#21257151)
a)I'm sure that's not true b)I'm sure that's not a helpful comment in this context
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