Science and Medicine @ScienceTip
Daily post on science and medicine from @JohnDCook JohnDCook.com Houston Joined January 2012-
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Fundamental units johndcook.com/blog/2018/10/2…
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'Dimensional analysis is trivial, but it’s not trivial why it’s trivial.
The meter was originally defined to be 1/10,000,000 of the meridian from the North Pole to the Equator through Paris. The meter is now defined to be 1/299,792,458 of the distance traveled by light in a vacuum in one second.
Science and Medicine retweeted
A cranky formula for π johndcook.com/blog/2026/06/0…
The observable universe contains about one atom per cubic meter.
Jeri's A to Z electronics videos makezine.com/2011/01/28/jer…
Stellar magnitude johndcook.com/blog/2023/08/2…
Kepler's third law of planetary motion: square of the period proportional to cube of the major axis.
Right hand rule for cross products and solenoids. en.wikipedia.org/wiki/Right-han…
Banana equivalent dose en.wikipedia.org/wiki/Banana_eq…
The suffix -plegia refers to paralysis. Examples: hemiplegia, paraplegia, quadriplegia.
Boyle's law: At a given temperature, the product of pressure and volume of a fixed amount of gas is a constant.
How the term 'scientist' came to be johndcook.com/blog/2011/02/1…
Why are so few foods blue? biology.stackexchange.com/questions/5647…
The name jejunum comes from the Latin word for empty because this part of the intestine was found empty on autopsy.
Python software library for astronomy: astropy.org
Adipose tissue stores fat. Babies have what is called brown fat, which has more mitochondria and is very vascularized, while adults have white fat that is more closely packed.
Lorentz force: F = q(E + v x B)
Most published research results are false johndcook.com/blog/2008/02/0…
Algebra Etc. @AlgebraFact
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Analysis Fact @AnalysisFact
134K Followers 19 Following Daily tweets about real and complex analysis and related topics. From @JohnDCook.
Grant Sanderson @3blue1brown
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Computer Science @CompSciFact
251K Followers 17 Following Daily tweets about computer science and related stuff @JohnDCook.
Martin Bauer @martinmbauer
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Data Science Fact @DataSciFact
196K Followers 19 Following Daily data science tweets from @JohnDCook.
Differential Eqns @diff_eq
76K Followers 17 Following Tweets on ordinary and partial differential equations from @JohnDCook
Signal Processing @DSP_fact
34K Followers 18 Following Digital signal processing, acoustics, Fourier analysis, etc.
Topology Fact @TopologyFact
74K Followers 19 Following Tweets on topology and geometry from @JohnDCook.
Jay Cummings @LongFormMath
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Scientific Python @SciPyTip
210K Followers 18 Following Tweets about SciPy (Scientific Python) and related topics from @JohnDCook.
MathType @MathType
47K Followers 276 Following MathType is the world’s leading equation editor powered by @wiris_science.
Unix tool tip @UnixToolTip
83K Followers 19 Following Tips on Unix utilities and related topics from @JohnDCook.
TeX and Typography @TeXtip
50K Followers 19 Following Tweets on TeX, LaTeX, and typography. @JohnDCook.
Sam Walters ☕️ @SamuelGWalters
14K Followers 478 Following 🇨🇦 Math prof. Former Chair of Math-Stat Dept at the University of Northern B.C. (Mar 2016 - Jun 2020). Christian🎄.
Network Fact @NetworkFact
46K Followers 19 Following Daily tweets about networks, graph theory, and related topics from @JohnDCook
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Algebra Etc. @AlgebraFact
195K Followers 19 Following Tweets about algebra, number theory, and miscellaneous math by @JohnDCook.
Analysis Fact @AnalysisFact
134K Followers 19 Following Daily tweets about real and complex analysis and related topics. From @JohnDCook.
Computer Science @CompSciFact
251K Followers 17 Following Daily tweets about computer science and related stuff @JohnDCook.
Data Science Fact @DataSciFact
196K Followers 19 Following Daily data science tweets from @JohnDCook.
Differential Eqns @diff_eq
76K Followers 17 Following Tweets on ordinary and partial differential equations from @JohnDCook
Signal Processing @DSP_fact
34K Followers 18 Following Digital signal processing, acoustics, Fourier analysis, etc.
Topology Fact @TopologyFact
74K Followers 19 Following Tweets on topology and geometry from @JohnDCook.
Scientific Python @SciPyTip
210K Followers 18 Following Tweets about SciPy (Scientific Python) and related topics from @JohnDCook.
Logic & Applications @LogicPractice
28K Followers 8 Following Logic and applications of logic from @JohnDCook
Unix tool tip @UnixToolTip
83K Followers 19 Following Tips on Unix utilities and related topics from @JohnDCook.
TeX and Typography @TeXtip
50K Followers 19 Following Tweets on TeX, LaTeX, and typography. @JohnDCook.
Network Fact @NetworkFact
46K Followers 19 Following Daily tweets about networks, graph theory, and related topics from @JohnDCook
Regular Expression @RegexTip
74K Followers 19 Following Learn to use regular expressions by following RegexTip. From @JohnDCook.
Units @UnitFact
25K Followers 17 Following Units of measurement, constants, dimensional analysis, etc. From @JohnDCook
Functor Fact @FunctorFact
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Medical Vocabulary @MedVocab
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