| Hint | Answer | % Correct |
|---|---|---|
| G | Gravitational constant | 71%
|
| h | Planck constant | 57%
|
| k | {Boltzmann} constant | 50%
|
| ε₀ | Vacuum permittivity | 50%
|
| µ₀ | Vacuum permeability | 36%
|
| α | Fine-structure constant | 29%
|
| H₀ | Hubble constant | 29%
|
| ħ | Reduced Planck constant | 29%
|
| σ | {Stefan}-{Boltzmann} constant | 29%
|
| Λ | Cosmological constant | 21%
|
| a₀ | Bohr radius | 14%
|
| κ | Einstein gravitational constant | 7%
|