Science and Medicine @ScienceTip
Daily post on science and medicine from @JohnDCook JohnDCook.com Houston Joined January 2012-
Tweets7K
-
Followers41K
-
Following19
-
Likes34
Charles Steinmetz (1865 - 1923) introduced the use of complex numbers in analyzing AC circuits.
0
0
9
732
1
View Details
Oddo–Harkins rule: elements with an even atomic number are more common than those with odd atomic number
Jupiter's Great Red Spot is twice the size of Earth.
FM radio is analogous to sending messages with a flashlight by varying the color of the light.
Physical constants and factorials johndcook.com/blog/2011/10/1…
AM radio is analogous to sending messages with a flashlight by varying the brightness of the light.
Differential equation for LRC circuit has exact same form as a mass-dashpot-spring mechanical system.
'Water continually dropping will wear hard rocks hollow.' -- Plutarch, c. 100 AD
Faraday discovered in 1831 that changing magnetic fields generate electric currents.
Science and Medicine retweeted
A useful way to tell African and Indian elephants apart
Stigler's law and Avogadro's number johndcook.com/blog/2012/01/0…
Oersted discovered in 1820 that electric currents generate magnetic fields.
'It's not so easy to free oneself from the idea that coordinates must have an immediate metrical meaning.' -- Albert Einstein
There were several competing theories of E&M during Maxwell's lifetime. Maxwell's theory triumphed a decade after he died.
Kinetic energy = 1/2 mass * velocity²
Maxwell published the laws of E&M as 20 equations. Now in modern notation they are four equations.
Technicium is mostly man-made, though traces have been found in nature.
Science and Medicine retweeted
Time's running out! Interested in discussing and understanding the fundamentals of electromagnetism? Join the all-star lineup for the Heaviside Symposium hosted by the Signals Museum in Huntsville, AL MLK Day Weekend. Submit your abstract today! aetherczar.substack.com/p/with-two-wee…
Cartoon guide to soldering log.andie.se/post/397677855…
Algebra Etc. @AlgebraFact
195K Followers 19 Following Tweets about algebra, number theory, and miscellaneous math by @JohnDCook.
Analysis Fact @AnalysisFact
135K Followers 19 Following Daily tweets about real and complex analysis and related topics. From @JohnDCook.
Grant Sanderson @3blue1brown
461K Followers 374 Following Pi creature caretaker. Contact/faq: https://t.co/brZwdQfdif
Computer Science @CompSciFact
250K Followers 17 Following Daily tweets about computer science and related stuff @JohnDCook.
the finite physicist @FinitePhysicist
70K Followers 362 Following theoretical particle physics & phenomenology || don't sleep through dreams that can come true
Martin Bauer @martinmbauer
107K Followers 1K Following Working on particle physics, quantum sensors, dark matter. Associate Prof at @IPPP_Durham @durham_uni, FLF @UKRI_News, Science board member @STFC_Matters
Data Science Fact @DataSciFact
195K 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
53K Followers 610 Following Math prof. Author of long-form textbooks on proofs (https://t.co/YqXnxDmOe0), real analysis (https://t.co/3IGQ6BIx5Z) & math history (https://t.co/KkXMGTxCDK).
Scientific Python @SciPyTip
209K Followers 18 Following Tweets about SciPy (Scientific Python) and related topics from @JohnDCook.
MathType @MathType
48K Followers 275 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 475 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
James @onyekachj12
0 Followers 87 Following
AsdFghJ @AsdFghJbfgrw
0 Followers 31 Following
adera @njoga_elisha
188 Followers 766 Following Software Engineer - @angular @typescript enthusiast.
Ivana Guerra Ferrari @GuerraFerr50639
616 Followers 480 Following Religião, ciência , arte , linguagem, ética e o humor, são os pilares de nossa sociedade.
M Bos @BosMattias
0 Followers 88 Following
The Lower Slobbovian ... @bald_iggle
18 Followers 49 Following fan of Lil'Abner ... and the land of the free
Fuad Suleymanli @fuadsuleymanli
0 Followers 45 Following
jo0L5s @Joolone
1K Followers 583 Following Drawing a path from the Royal College of Art to the heart of Early Learning. It turns out there’s nothing ‘child’s play’ about child’s play.
𐙚 𝕼𝖆𝖋𝖆 @QaFa06
0 Followers 58 Following
Dr Dhananjay Ostawal @DOstawal
15 Followers 54 Following I first launched a war against the constant ratio π (pi) & proposed the 'Omega constant 'instead of 'pi' for the circle in 1994
Ignasi Agut @IgnasiAgut
135 Followers 688 Following
cesar @czrxve
0 Followers 63 Following
Mathematics-ONCE (SCI... @mathematicsonce
393 Followers 2K Following "Love ain't a science, don't need no license" - TWICE, 2021 In Math since 2016, ONCE since 2025. 🇮🇩 Mathematics Olympiad/OSN: SD 2019 🥉 SMP 2022 🥈 SMA 2025 F
Khamees Bin Abubakar @Khamsus2
147 Followers 1K Following Web3 Researcher Community Builder and Airdrop Hunter Learning, Building and Earning In Web3.0, Long Term Holder.
. @mhp1267
31 Followers 844 Following
Praveen @Praveencool123
285 Followers 403 Following
AF @1afreaks
19 Followers 214 Following
Paul Jenkinson @psjenks
16 Followers 354 Following
👑 @jcnxnfnxjdjdjg
12 Followers 416 Following
Dr. Nouran Mahran @NourMoh45246278
328 Followers 1K Following 🩺 Med Student @Helwan | 🧪 HealthTech QA Specialist 💡 Founder of @GeneX, Zar3ty & TWC Bridging healthcare & software quality to shape better digital health.
El Escolástico 🇻�... @soyescolastico
8 Followers 95 Following Católico❤️🔥✝️ y tradicionalista 🇪🇸. Escolástico de pura cepa: tomismo y gramática especulativa. Boecio. Discrepo en teología de las tesis de Gustavo Bueno.
fatemeh.mohammadpour @fatemehmpb
5 Followers 420 Following
Kazi Jabid Hassan @ThunderMahir_08
71 Followers 3K Following
j bowen @jsbowenpe
33 Followers 340 Following
Chimie DILUMUENE @CDilumuene02
9 Followers 375 Following Étudiant en mathématiques et informatique appliquée aux sciences humaines et sociales. Intégrateur et développer Web. Data Analytique .
Noumenon @Noumenero
0 Followers 40 Following If you don't score high in openness, we're probably not going to get along.
Emily Spencer @EmilySp08286034
0 Followers 39 Following
GPSPYH GPSPYH @gpspyh37722
2 Followers 200 Following
Imran Aman Ullah @IAMANULLAH
47 Followers 258 Following
Coco @Coco62223809
0 Followers 15 Following
Nana Qwame Chordson @nanaKwameAsan1
57 Followers 779 Following
Rasheda Haughbrook, P... @RahBrook
238 Followers 318 Following Developmental Psychologist • Black Psych Professor • Natural Hair Lover • Every Woman • Ever Evolving
JONATHAN @TsAr_Jonathan
17 Followers 6K Following
Enric Monte Moreno @EnricMonte
18 Followers 44 Following
Harshit @harsh1297
39 Followers 521 Following
qimir @qiomir
5 Followers 207 Following
Cock @Mistrcocksucker
42 Followers 1K Following
Top G @ImMrProducer
897 Followers 2K Following
Cristobal @Cristob61694435
0 Followers 26 Following
Algebra Etc. @AlgebraFact
195K Followers 19 Following Tweets about algebra, number theory, and miscellaneous math by @JohnDCook.
Analysis Fact @AnalysisFact
135K Followers 19 Following Daily tweets about real and complex analysis and related topics. From @JohnDCook.
Computer Science @CompSciFact
250K Followers 17 Following Daily tweets about computer science and related stuff @JohnDCook.
Data Science Fact @DataSciFact
195K 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
209K 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
24K Followers 17 Following Units of measurement, constants, dimensional analysis, etc. From @JohnDCook
Functor Fact @FunctorFact
27K Followers 6 Following Functional programming and category theory tweets from @JohnDCook
Medical Vocabulary @MedVocab
50K Followers 19 Following Learn medical vocabulary a little bit at a time. From @JohnDCook.
Trends for United States
You might like
Algebra Etc.
@AlgebraFact
195K Followers
Differential Eqns
@diff_eq
76K Followers
Probability Fact
@ProbFact
147K Followers
Analysis Fact
@AnalysisFact
135K Followers
Network Fact
@NetworkFact
46K Followers
Logic & Applications
@LogicPractice
28K Followers
Topology Fact
@TopologyFact
74K Followers
Data Science Fact
@DataSciFact
195K Followers
Computer Science
@CompSciFact
250K Followers
Functor Fact
@FunctorFact
27K Followers
Scientific Python
@SciPyTip
209K Followers
Signal Processing
@DSP_fact
34K Followers
TeX and Typography
@TeXtip
50K Followers
Regular Expression
@RegexTip
74K Followers
Unix tool tip
@UnixToolTip
83K Followers