quantum jump

(redirected from a quantum jump)

quantum jump

A sudden or important change or improvement. That brand-new shopping center is a quantum jump from the old, run-down mall that used to be in that location.
See also: jump, quantum
References in periodicals archive ?
RDA consultants had proposed erection of railway steel bridge weighing 237 tonnes and on the other hand Railway has enhanced the quantum of bridge to 480 tones, therefore, cost of construction has registered a quantum jump increase from Rs 429.50 million to Rs 550 million, he added.
(2) It is assumed that at time t, the normalized state [[psi].sup.r](t) is reached through a quantum jump; then we set [[psi].sup.r](t) = [??].
Therefore, although we try very hard to create continuities between the chemical and the biological, there is not in fact a complete continuity; there is a jump, a quantum jump, you might say.
According to quantum theory, the more frequently one tries to observe a system's state as the system is going through a quantum jump, the more likely the system will show up in its initial state.
We can get better--there's no question about it--but to make a quantum jump we have to look at composites."
Similar techniques allowed Dehmelt and his collaborators to observe a quantum jump in a single ion (SN: 6/21/86, p.