@ScienceTip

Daily post on science and medicine from @JohnDCook

 Houston
JohnDCook.com
Joined January 2012
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Charles Steinmetz (1865 - 1923) introduced the use of complex numbers in analyzing AC circuits.
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Oddo–Harkins rule: elements with an even atomic number are more common than those with odd atomic number
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Jupiter's Great Red Spot is twice the size of Earth.
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FM radio is analogous to sending messages with a flashlight by varying the color of the light.
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Physical constants and factorials johndcook.com/blog/2011/10/1…

Physical constants and factorials

The previous post mentioned that Avogadro's constant is approximately 24!. Are there other physical constants that are nearly factorials? I searched SciPy's collection of physical constants looking...

johndcook.com
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AM radio is analogous to sending messages with a flashlight by varying the brightness of the light.
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Differential equation for LRC circuit has exact same form as a mass-dashpot-spring mechanical system.
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'Water continually dropping will wear hard rocks hollow.' -- Plutarch, c. 100 AD
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Faraday discovered in 1831 that changing magnetic fields generate electric currents.
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Science and Medicine retweeted
Terrible Maps
@TerribleMapsOct 11
A useful way to tell African and Indian elephants apart
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Stigler's law and Avogadro's number johndcook.com/blog/2012/01/0…

Stigler’s law and Avogadro’s number

Stigler's law says that no scientific discovery is named after its original discoverer. Stigler attributed his law to Robert Merton, acknowledging that Stigler's law obeys Stigler's law. Avogadro's...

johndcook.com
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Oersted discovered in 1820 that electric currents generate magnetic fields.
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'It's not so easy to free oneself from the idea that coordinates must have an immediate metrical meaning.' -- Albert Einstein
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There were several competing theories of E&M during Maxwell's lifetime. Maxwell's theory triumphed a decade after he died.
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Kinetic energy = 1/2 mass * velocity²
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Maxwell published the laws of E&M as 20 equations. Now in modern notation they are four equations.
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Technicium is mostly man-made, though traces have been found in nature.
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Power = work / time
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Science and Medicine retweeted
Hans G. Schantz
@AetherCzarSep 29
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/wi…
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Cartoon guide to soldering log.andie.se/post/397677855/…

Soldering is easy - comic adaptation of Mitch Altman’s soldering teachings

I met Mitch Altman the first time at Music Hack Day London. Mitch is the maker of the infamous TV B-gone, a remote control with the single purpose of turning off televisions. He travels the world...

log.andie.se
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