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in the PONS Dictionary

quan·tum <pl -ta> [ˈkwɒntəm, Am ˈkwɑ:nt̬-, pl -t̬ə] N

1. quantum form (amount):

quantum
Menge f <-, -n>
quantum
Anzahl f <-> kein pl
quantum of
Quantum nt <-s, Quanten> form an +dat

2. quantum (portion):

quantum
[An]teil m

3. quantum PHYS (unit):

quantum
Quant[um] nt spec
quantum leak
Tunneleffekt m <-(e)s, -e>
quantum of action
quantum of energy
quantum of light
quantum of light
quantum of light
Photon nt <-s, -to̱·nen> spec

4. quantum COMPUT:

quantum
Quantum nt <-s, Quanten>

5. quantum LAW:

quantum
Schadenhöhe f <-, -n>
quantum

quan·tum ˈjump N

1. quantum jump PHYS (transition):

quantum jump
Quantensprung m <-(e)s, -sprünge> spec
quantum jump

2. quantum jump fig (advance):

quantum jump

quan·tum me·ˈchan·ics N + sing vb

quantum mechanics
Quantenmechanik f <-> kein pl

quan·tum num·ber N PHYS

light quantum [ˌlaɪtkwantəmˈfəʊtɒn], photon N

light quantum
light quantum

quan·tum ˈleap N fig (big increase, advance)

quantum leap
OpenDict entry

quantum efficiency N

OpenDict entry

quantum bit N

quantum bit (qubit) COMPUT
OpenDict entry

quantum entanglement N

OpenDict entry

quantum phase transition, QPT N

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