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Answers for students: Why are scientists and science teachers so obesessed with units?

27 Feb 2017, 18:25 UTC
Answers for students: Why are scientists and science teachers so obesessed with units?
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This is the first in a series of posts designed to help students of all ages with the physics problems they most often often ask me about. Have you ever felt like feeding your teacher atext book because, after spending hours pouring over the pointless physics problem they set, they gave you no marks – even though you got the answer right? You literally just forgot to write down the units. The teacher knows what the units are, they wrote damn question! Hell, you should rip up and eat their favourite book, that'll show them.Show them they've driven you insane, probably, but I've met students who seemed pretty close to that point. If you haven’t ever felt like that…. congratulations! You either are a robot from the future, sent back in time to make everyone else feel bad about themselves*, or you have something to blackmail your physics teacher with. Something big I hope. Because I still make that mistake from time to time, and I have a freaking PhD in Physics. But... that said... there’re good reasons why you should make the effort to get theunits right - not just in school but in life. As an example: Imagine ...

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