1) Energy quantum
Found on
https://www.crosswordclues.com/clue/roton
In theoretical physics, a roton is an elementary excitation, or quasiparticle, in superfluid helium-4. The dispersion relation of elementary excitations in this superfluid shows a linear increase from the origin, but exhibits first a maximum and then a minimum in energy as the momentum increases. Excitations with momenta in the linear region are c...
Found on
http://en.wikipedia.org/wiki/Roton
An American design for a piloted commercial space vehicle intended to provide routine access to orbit for a two-person crew and cargo. The Roton would be a reusable, single-stage-to-orbit (SSTO), vertical takeoff and landing (VTOL) vehicle, 19.5 m high and 6.7 m in diameter, able to carry up to 3,20...
Found on
http://www.daviddarling.info/encyclopedia/R/Roton.html
No exact match found.
