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all 10 comments

[–]gareen5 0 points1 point ago

I would be so fucking happy.

How would things fall apart? It would give much better estimates for everything. How is that airplane anything to do with scientific notation?

[–]cyanicide 0 points1 point ago

Sig figs don't automatically mean scientific notation. They're two different things. But yes, what do Sig figs have to do with this plane.

[–]gareen5 0 points1 point ago

http://en.wikipedia.org/wiki/Scientific_notation

Scientific Notation =/= Significant Figures but Significant Figures = Scientific Notation.

[–]cyanicide 0 points1 point ago

Yes Sig figs are used in scientific notation. But they are used everywhere as well.

[–]gareen5 0 points1 point ago

They are part of the general subset that is "scientific notation," like pocket whales are part of mammals.

[–]webbeco[S] 0 points1 point ago

Let's use sig figs to subtract 25 from 2000

Mathematically, we conclude the answer as being 1975. But. 2000 has only one significant figure, so the answer for 2000-25 must be... 2000.

[–]gareen5 0 points1 point ago

Depends on how you measure it, if you measure something by units of 1 thousands and that is your accuracy, then yes 2x103 - 25. is 2x103.

But if you can measure 2000 by units of 1, then 2000-25 is 1975.

But if you measure the 2000 units by units of 1, and the 25 units by measure of ten thousandth, then 2000-25.001 is 1975.

This is important stuff man, its a reflection of the accuracy of your measurement since it is not possible to have an answer more accurate then the tools used to measure.

[–]webbeco[S] 0 points1 point ago

If I could, I'd put a reputand bar by the last zero in 2000. Then that is an accuracy of four significant figures. But just the 2000 leaves discepency as to the accuracy of your measuring device, leaving science to give that number an accuracy of one significant figure.

[–]gareen5 0 points1 point ago

2000.0 is 5, 2000 is 4, 2.00x101 is 3, 2.0x102 is 2, 2x103 is one, That is how it should be represented in journals and scientific papers.

[–]RealityIsMyReligion -1 points0 points ago

I cannot tell if this is too highbrow for me, or just complete nonsense...