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Posts Tagged ‘Viden

Det er en kold tid

Bare lidt indtryk fra ugen der ikke er gået endnu

Sean Carroll forklarer om tiden og ensretning: Hvordan kan det være at vi altid siger “her skal du se et billede af hvordan byen så ud før i tiden …”

Der *er* jo dog firmaer (arkitekter) som specialiserer sig i at lave billeder af hvordan byen ser ud i fremtiden.

Men Sean Carroll er ærlig i sine mange formidlende foredrag, og siger blandt andet at vores viden om “Big Bang” selvfølgelig er tilbageskrivninger, – beregnede, kvalificerede gæt, men dog gæt.

Og det samme gælder vores viden om elementær-partikler.

Vi støder protoner sammen med stor energi og håber, at der kommer en Higg’s Boson ud af det. Det svarer ikke til at støde to Timex ure sammen og håbe at der kommer et Rolex ud af det!

Written by Donald

Thursday, December 2, 2021 at 12:54 GMT+0000

Posted in Cityscape, Vejr

Tagged with ,

Sean Carroll humor

How to find the Higg’s Boson, how do we do? We smash particles together with high energy, and watch the debris. But it is not that there is a Higg’s Boson hidden inside the particles! it is that when we smash these particles together, some energy levels mix and some other particles are created.

It is like smashing two Timex watches together and out comes a Rolex.

(Higg: a person named Peter Higg who theorized that there is a particle of a kind, a boson, which is an elementary particle of a kind among 16 or 17 other.)

Sean Carroll:

Sean Michael Carroll (born October 5, 1966) is an American theoretical physicist who specializes in quantum mechanics, gravity and cosmology. He is a research professor in the Walter Burke Institute for Theoretical Physics in the California Institute of Technology (Caltech) Department of Physics [… cut] …. critique of theism and defense of naturalism. He is considered a very prolific public speaker and science populariser.

(my emphasis)

Listen or watch from 45:40

(lyt fra 45 minutter og 40 sekunder)

Written by Donald

Friday, November 26, 2021 at 11:53 GMT+0000

Posted in Videnskab

Tagged with ,