Discover and read the best of Twitter Threads about #QuantumMechanics

Most recents (9)

Daily Bookmarks to GAVNet 07/21/2021 greeneracresvaluenetwork.wordpress.com/2021/07/21/dai…
Vulnerable nations lead by example on Sustainable Development Goals research

nature.com/articles/d4158…

#SustainableDevelopmentGoals #ResearchPriorities #consequences
How Bell’s Theorem Proved ‘Spooky Action at a Distance’ Is Real

quantamagazine.org/how-bells-theo…

#BellsTheorem #SpookyAction #proof #QuantumMechanics
Read 8 tweets
Pt1/5 Professor Robert Foster the moon, tides &nature ofthe world #RobertFoster #moon #tides #earth #cosmos #quantummechanics
“Truth is the guidance, the hope and the directive of the human mind and that man must strive to know and to understand the real nature of the world”
Pt2/5 Professor Robert Foster the moon, tides &nature ofthe world #RobertFoster #moon #tides #earth #cosmos #quantummechanics
“Truth is the guidance, the hope and the directive of the human mind and that man must strive to know and to understand the real nature of the world”
Pt3/5 Professor Robert Foster the moon, tides &nature ofthe world #RobertFoster #moon #tides #earth #cosmos #quantummechanics
“Truth is the guidance, the hope and the directive of the human mind and that man must strive to know and to understand the real nature of the world”
Read 5 tweets
Daily Bookmarks to GAVNet 09/10/2020 greeneracresvaluenetwork.wordpress.com/2020/09/10/dai…
Psychological impacts of “screen time” and “green time” for children and adolescents: A systematic scoping review

journals.plos.org/plosone/articl…

#GreenTime #ScreenTime #psychology
It has four incarnations every lifetime, can return from the dead and is the subject of an unlikely new bestseller...

nexusnewsfeed.com/article/climat…

#EuropeanEels #LifeCycle #zoology
Read 8 tweets
You cannot ignore.....
Our inability to understand and grasp something doesn't mean that it doesn't exist.

#mystery #cognitiveload
West has yet to understand paranormal phenomenon.

Ancient civilizations has achieved so much that still today we are unable to understand and comprehend.

#History
Read 9 tweets
1/ Here is a proposal of how to distinguish between different, supposedly "equivalent," #orthogonal mixtures of photons. In this case, it is R + L mix of circular, to be distinguished from mixtures of linear #polarization.
#Physics #QuantumMechanics #ThoughtExperiment
I am leaving aside right here whether it could lead to #FTL communication (#SuperluminalSignalling), and focusing on the bare being able to make the distinction. Impractical - but of major theoretical importance.
#ProperMixtures #MeasurementProblem
We use a compound detector D for this purpose. Its first element is a quarter-wave plate with horizontal fast axis, that is rotationally free within a small angle (to allow measurement of changes in #angularmomentum of roughly a few hundred ħ, which is still very tiny.)
Read 14 tweets
#bicentennial
#germanculture
This year: 200th #anniversary of the #publication of #Goethe's great work of #art "#WestöstlicherDivan".#Heisenberg memorized #love-#poems from the book while working on #QuantumMechanics in #Heligoland.
#Schubert it to #music:
The #poem sung by #ElisabethSchwarzkopf is on p. 166 of the 1819 edition and reproduced below, side-by-side with the 1914 translation by #Irish critic and #poet Edward Dowden (1843-1913).The translation is close, but NOT accurate (as Dowden tries to recreate rhyme and rhythm).
..
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Remark. The unclear phrase 'zu jemandes Herzen sprechen' was
allegedly utilized by #Heidegger in at least one letter sent to
#HannahArendt in 1925: cf. lisa.gerda-henkel-stiftung.de/ich_muss_heute….
Read 4 tweets
Thought you all might like to know, say, the probability of a human passing through a wall. Yes? Yes, because #QuantumMechanics is fun! Let's begin!
The set up: a barrier with a higher energy than an electron. Think a tall wall, and a ball that didn't get thrown high enough to go over. Classically, the electron scatters back, like the ball bounces back. But in quantum, that electron has a probability of passing through!
With the above case for the electron, we can find something called the transmission coefficient, which is literally the probability of a particle to pass through a barrier. It looks like this: (Sakurai P. 526)
Read 12 tweets

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