Guided matter waves lab 🇺🇦 @quantumsensing@qoto.org

#PhysicsFactlet
An object is said to be "chiral" if you can't superimpose it with its mirror image (e.g. your hands).
Chiral molecules can have completely different chemical properties from their mirror image, but they also have different optical properties (which helps to detect them). In particular they react very differently to a circularly polarized wave. We can get some intuition on why that happens using a "balls and springs" toy model (Born-Kuhn model).
#Chirality #Optics #Visualization

I've definitely used and still use this technique as a first pass on data to see if it's looking like we have something interesting going on. Works better now laptop screens are visible from wider angles.
Via XKCD.

@physicssteve maybe it's a subtle insult, akin to Pauli's "it's not even wrong!" 😀

#Map of the #Ottoman empire's #telegraph lines from 1874

Very interesting #science news - the first SI prefixes since 1991 were announced today at the General Conference on Weights and Measures.
➡️ quetta = \( 10^{30}\), Q
➡️ ronna = \( 10^{27}\), R
➡️ ronto = \( 10^{-27}\), r
➡️ quecto = \( 10^{-30}\), q

For example the mass of an electron is just under one quectogram (1qg).

🔗 The resolution (in French) is available here https://www.bipm.org/documents/20126/64811223/Resolutions-2022.pdf/281f3160-fc56-3e63-dbf7-77b76500990f

#math #physics