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Cake day: June 16th, 2023

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  • If anyone is wondering, slide rules use logarithms to turn addition into multiplication and subtraction into division. So think about how you would do addition with two rulers, if you were adding 2+3 you would line up the rulers so that the 0 on one was at the 2 on the other. Then you would see that the 3 on that one would be lined up with the 5 in the first ruler. If you follow that procedure in a slide rule then you will have done multiplication instead.


  • This comic references the movie Superman from 1978, in which Superman travels back in time. They chose to show this time travel as the earth spinning backwards and people got confused thinking that they were implying if you spin the earth backwards time would go backwards. The comic is referencing that confusion, or playing into it.