OptionVotes
NO
YES
1565
639
OptionProbability
5–9
20–24
10–14
15–19
1–4
25–29
30–∞
24
22
18
6
3
2
No decision made in 2026 conference
Second defined by a (dynamic) weighted sum of atomic transitions
Second defined by 199Hg 265nm transition
Second defined by 27Al+ 267nm transition
Second defined by 199Hg+ 282 nm transition
Second defined by 171Yb+ (E2) 436nm transition
Second defined by 171Yb+ (E3) 467nm transition
Second defined by 171Yb 578nm transition
Second defined by 88Sr+ 674nm transition
Second defined by 88Sr 698nm transition
Second defined by 87Sr 698nm transition
Second defined by 40Ca+ 729nm transition
Second defined by 87Rb 6.8GHz microwave transition
Second defined by a (fixed) weighted sum of atomic transitions
Second defined by fixing the Rydberg constant
Decision made to not redefine the second
Other
95
1
0
1675
600
115
87
