Calcolatore Densita Energia Oscura — Formula
## Calculating Dark Energy Density
Dark energy drives the accelerating expansion of the universe. Its density is linked to the cosmological constant.
### Formula
**rho_Lambda = Lambda * c² / (8 pi G)**
- *Lambda* is the cosmological constant (~1.1 x 10⁻⁵² m⁻²)
- *c* is the speed of light
- *G* is the gravitational constant
The resulting density is extremely small but dominates the total energy budget of the cosmos.
Dark energy drives the accelerating expansion of the universe. Its density is linked to the cosmological constant.
### Formula
**rho_Lambda = Lambda * c² / (8 pi G)**
- *Lambda* is the cosmological constant (~1.1 x 10⁻⁵² m⁻²)
- *c* is the speed of light
- *G* is the gravitational constant
The resulting density is extremely small but dominates the total energy budget of the cosmos.
Esempio Risolto
Use the observed cosmological constant Lambda = 1.1056e-52 m⁻².
- rho = Lambda * c² / (8 pi G)
- c² = (2.998e8)² = 8.988e16
- 8 pi G = 8 * 3.14159 * 6.674e-11 = 1.676e-9
- rho = 1.1056e-52 * 8.988e16 / 1.676e-9
- rho ≈ 5.93e-27 kg/m³