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Science Tip
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ScienceTip
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Daily science tweets from @JohnDCook
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3.969
Tweetovi
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18
Pratim
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35.663
Osobe koje vas prate
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Science Tip
@ScienceTip
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11 h |
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An engineer's RMS (root mean square) is a mathematician's L2 norm.
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31. sij |
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Germanium is the only stable element named after a country. The others -- francium, polonium, americium, and nihonium -- are radioactive.
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30. sij |
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Indium was not named after India but after indigo, from the blue color in its spectrum.
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29. sij |
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Gravitational attraction of stars and cows johndcook.com/blog/2018/03/2… pic.twitter.com/UTsARaoNYS
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@ScienceTip
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28. sij |
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The hypocenter of an earthquake is the point below the earth's surface where a fault rupture begins.
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Gabriel Peyré
@gabrielpeyre
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28. sij |
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Oldies but goldies: MacAdam, Visual sensitivities to color differences in daylight, 1942. Showed that color perception can be modelled using an anisotropic metric. en.wikipedia.org/wiki/MacAdam_e… pic.twitter.com/2qpY16jPZC
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27. sij |
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First US FDA approved trial of IV phage therapy
healio.com/infectious-dis…
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27. sij |
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Remember: With great power comes great current squared times resistance. xkcd.com/643/
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26. sij |
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Lorentz is the relativity guy.
Lorenz is the dynamical systems guy. twitter.com/AnalysisFact/s…
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24. sij |
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Can Maxwell's equations be derived from Coulomb's Law and Special Relativity? physics.stackexchange.com/questions/3618…
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23. sij |
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The middle size of the universe johndcook.com/blog/2010/11/1…
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22. sij |
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If a credit card won't read when swiped, does wrapping it in plastic actually help and if so, why? physics.stackexchange.com/questions/7426…
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21. sij |
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Immanuel Kant proposed the nebular hypothesis of solar system formation in 1755.
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Massimo
@Rainmaker1973
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21. sij |
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An elegant representation for putting them all to scale buff.ly/2M2NsYF pic.twitter.com/MNq7XwyFsU
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20. sij |
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For any magnetic field B, you can find a vector potential A such that B = curl A.
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Massimo
@Rainmaker1973
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20. sij |
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Kiwis lay the largest egg in relation to their body size of any species of bird in the world. It can weigh as much as 450 g: if we compare that proportion to humans, it would mean giving birth to a fully grown 4 year old kid buff.ly/2vKfxd9 pic.twitter.com/F6nAU01kTU
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17. sij |
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Take chances, make mistakes, and get messy johndcook.com/blog/2010/12/1… pic.twitter.com/yj24L1iS7m
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John D. Cook
@JohnDCook
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16. sij |
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New post: Remember complexity
johndcook.com/blog/2020/01/1… pic.twitter.com/wx9RTHHnj6
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@ScienceTip
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16. sij |
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'The role of the infinitely small is infinitely large.' -- Louis Pasteur
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15. sij |
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Differential equation for charge in a circuit with inductance L, resistance R, capacitance C, & voltage source E. johndcook.com//eqn/lrc_ode.h…
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