Here, I mean 'mega' of course. Sorry about that. Conventions can be confusing and I was taught both SI and the naming convention where nouns based on inanimate objects/properties are in lowercase and those based on proper names in uppercase. For example, 'kilo', 'deci', '(V)olt' (Volta), '(A)mp' (Ampère). Of course, this all falls apart when we run out of symbols, 'Giga' being another notable example of needing to use u/c. In this case, it was me being slack and not using the now standard convention. Incidentally, I often do the same by using Gaussian (cgs) units when I should be using SI. Trouble is I was taught CGS before SI so I'm used to working in it.
BTW, you'll note that after 'Gaussian' 'cgs' is in l/c, that's deliberate on my part as it's often designated that way despite the fact that the browser's speller automatically corrected it to u/c. The second instance I've left as the browser corrected it.
BTW, you'll note that after 'Gaussian' 'cgs' is in l/c, that's deliberate on my part as it's often designated that way despite the fact that the browser's speller automatically corrected it to u/c. The second instance I've left as the browser corrected it.