alt Hacker Newse+ is such an unintuitive decimal representation system. going in blindly, it's completely non-obvious what "e" stands for, surely "d" would make far more sense. also, the namespace for e is plenty filled up as is, and, most of all, +12 implies 12 additional digits, not digits after the point
Google's choice to use it for calculation results despite having essentially no restriction on text space always annoyed me. I think this is the first time I've seen a human using it
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rmccue • yesterday at 11:34 AM
The use of E notation for scientific notation dates back to 1956: https://en.wikipedia.org/wiki/Scientific_notation#:~:text=wh...
It’s also pretty common on scientific and graphing calculators; the first time I saw it was in junior school in maths.
Nothing to do with Google.
(Apologies if this is pedantic, but:)
The letter "e" (for "exponent") has meant "multiplied by ten to the power of", since the dawn of computing (Fortran!), when it was impossible to display or type a superscripted exponent.
In computing, we all got used to it because there was no other available notation (this is also why we use * for multiplication, / for division, etc). And it's intuitive enough, if you already know scientific notation, which Fortran programmers did.
Scientific notation goes back even further, and is used when the magnitude of the number exceeds the available significant digits.
E.g., Avogadro's number is 6.02214076 × 10⁻²³. In school we usually used it as 6.022 × 10⁻²³, which is easier to work with and was more appropriate for our classroom precision. In E notation, that'd be 6.022E-23.
1.3076744e+12 is 1.3076744 × 10¹². The plus sign is for the positive exponent, not addition. You could argue that the plus sign is redundant, but the clear notation can be helpful when working with numbers that can swing from one to the other.