€ 165
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psi necklace | gold vermeil
A psi necklace is a small way to wear what you studied with pride, whether ψ meant the wave function in your degree or the sign of psychology. Give it in gold vermeil to a graduate in either field, or keep it for yourself.
Who It's For
- a physics or chemistry graduate, at the end of her degree
- a psychologist friend or colleague
- someone who already collects science jewelry
- yourself, as a small piece to wear every day
Nikola K., on the gold version: “a wonderful gift to myself, I'm proud to wear it”. Valentina A., from a review of the silver version: “I have other sciencejewelry necklaces but this is just my fav.”
How ψ Entered Physics
In early 1926 Erwin Schrödinger took up Louis de Broglie's idea that electrons behave like waves, and wrote the electron's wave as ψ. In his first paper on wave mechanics he dropped the old quantum rules for allowed orbits. He asked instead at which energies ψ could stay finite and well behaved everywhere, and for a bound electron only certain energies passed. For hydrogen they matched the levels known from its spectrum. The whole numbers of quantum theory, he wrote, now appear “in the same natural way as the integers specifying the number of nodes in a vibrating string”. A guitar string vibrates only at certain frequencies, and an electron bound in an atom holds only certain energies.
Explore Related Physics and Psychology Jewelry
- psi necklace | silver
- Feynman scattering necklace | gold vermeil
- E = MC2 necklace | gold vermeil
- neuron necklace | gold vermeil
FAQ
How big is the pendant, and how does it sit?
The pendant measures 15 mm (about 0.6 inches), a little smaller than a 1-cent euro coin. It hangs from a loop at its top and sits around the collarbone, on a 45 cm (17.7 inch) gold vermeil chain with a 5 cm (2 inch) extender. Extra chains of 40, 42, 45 or 50 cm with a 5 cm extender, or 80 cm, can be added on this page. The pendant is 2.5 microns of 18K gold over solid sterling silver, nickel-free and hypoallergenic.
Is there a silver psi necklace?
Yes. The same 15 mm psi pendant comes in sterling silver, on a 45 cm sterling silver chain with the same 5 cm extender. Both hang from a loop at the top and sit at the same height. Choose the finish she already wears. The design is the same in both finishes.
Will it arrive in time, and what if it isn't right?
DHL Express delivers it free worldwide in 1-5 business days, and we pay the import duties and taxes, so nothing is due at the door. It arrives in a ready-to-gift jewelry box and festive envelope. If it isn't right, our 30-day “Love It or Return It” policy applies.
Why does one particle in physics have two names, J and ψ?
Because two teams found it independently. Samuel Ting's MIT group, working at Brookhaven in New York, saw a sharp peak at 3.1 GeV in late summer 1974 and was still checking it. On 9-10 November Burton Richter's group, colliding electrons and positrons at SLAC in California, found the same particle. Ting called it J, SLAC called it ψ, and both teams announced it on 11 November. It was soon understood as a charm quark bound to its antiquark. Richter and Ting shared the 1976 Nobel Prize in Physics.
Math & Physics
Unlock the elegance of the abstract with our math and physics-inspired jewelry collection. These carefully crafted pieces mirror the profound equations and natural laws that shape our understanding of the universe. Experience the allure of fractals, the rhythmic beauty of pi, and the celestial wonder of astral formations—each piece serves as a wearable homage to the artistry inherent in scientific inquiry.
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