Kelvin / Celsius / Fahrenheit

Mir ist kalt. Mit ist warm. Aber wie warm ist warm? Und wie kalt ist kalt?

Das ist sehr individuell. Wenn wir essen kochen oder einen Kuchen backen wollen, dann brauchen wir die Temperatur schon genauer.

Dafür gibt es verschiedene Möglichkeiten die Temperatur unabhängig vom persönlichen Empfinden anzugeben.

Dazu schaue ich mir heute drei verschiedene Temperaturskalen an.

Viel Spaß beim hören. Habt ihr noch ein paar lustige Möglichkeiten gefunden, Temperaturen anzugeben? Lasst mir einen Kommentar da. Ich bin schon gespannt.

Let's Do Techno X Scotish Base @ Teritorija - 06 Mar feat. Kelvin, Kupris, Notwelcome + more

#SESH #Kelvin #Kupris #Notwelcome

https://sesh.sx/e/1640051

The mathematical theory of linkages was once found beautiful, but is now comparatively unknown.

One of its highlights was what Florian Cajori (1859–1930) called the ‘beautiful discovery’ of the Peaucellier–Lipkin linkage (found independently in 1864 and 1871), a simple mechanism that transforms circular motion into linear motion (see attached image).

The importance of such a mechanism is that it can produce straight-line motion without using guide-rails and thus reducing friction. Previous linkages such as James Watt's (1736–1819) only *approximated* straight-line motion.

J.J. Sylvester, (1814–97) (who characterized his mathematical work as ‘the worship of the True & Beautiful’) admired a pump based on the linkage for ‘[i]ts elegance, and the frictionless ease with which it can be worked (beauty as usual the stamp and seal of perfection)’.

When the physicist William Thomson (later Baron Kelvin; 1824–1907) was able to work a model of the linkage, he was reluctant to hand it back, saying: ‘No! I have not had nearly enough of it — it is the most beautiful thing I have seen in my life’.

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#linkage #mechanism #mechanics #Kelvin #Sylvester #MathematicalBeauty

Kelvin / Mol

Letzte Folge der SI-Einheiten Reihe.

Heute geht es darum, wie wir Temperatur definieren und um eine echt große Zahl.

Viel Spaß beim hören 🙂

“Curiosity is, in great and generous minds, the first passion and the last”*…

From the arcane through the mysterious to the perplexing, a glorious collecton of obscure– but fascinating– knowledge…

Freakpages is a community-curated directory of esoteric articles across the internet, primarily from Wikipedia. Here, we encourage you to learn about interesting topics you have never heard of…

… divided into categories (Society, History, Technology, Psychology, Physics, Biology, Chemistry, Finance, Philosphy), with continuously refreshed selections from both the curators and the community.

A few examples: Egregore, Operation Northwoods, Matrioshka Brain, Zeigarnik Effect, Retrocausality, Horizontal Gene Transfer, Strange Matter Seeding, Keynesian Beauty Contest, Chinese Room…

So many more at: Freakpages

[Image above: source]

* Samuel Johnson

###

As we explore, we might spare a thought for a man driven by an endles spirit of inquiry, William Thomson, 1st Baron Kelvin; he died on this date in 1907. A mathematician, mathematical physicist, and engineer considered by many “the Newton of his era,” Lord Kelvin was instrumental in the formulation of the first and second laws of thermodynamics, and contributed significantly to unifying physics, which was then in its infancy of development as an emerging academic discipline. He received the Royal Society’s Copley Medal in 1883 and served as its president from 1890 to 1895. In 1892 he became the first scientist to be elevated to the House of Lords. Absolute temperatures are stated in units of kelvin in his honor.

source

#art #culture #curiosity #engineering #Freakpages #history #Kelvin #knowledge #lawsOfThermodynamics #literature #LordKelvin #Mathematics #music #philosophy #politics #Science #Technology #thermodynamics #WilliamThomson

#Kelvin-Helmholtz clouds.

Layers of cooler and warmer air interact to create the "breaker" like formation.

#CapeTown #SouthAfrica #Photography